I'm embarking on a recap of my SA-8100 and have been putting together a list and figured I'd post it here for vetting by the resident gurus. Nothing exotic, but I do wonder if I made the right choice in film caps to replace some small .22uf and .47uf Sanyos. Hopefully others will find this list useful. ----------------------------------------------------------------- AWF-006 - EQUALIZER AMP AWF-006 C1 2.2 25 cssa: 2.2 50 647-UKL1H2R2MDDANA AWF-006 C2 2.2 25 cssa: 2.2 50 647-UKL1H2R2MDDANA AWF-006 C5 470 6 cea: 470 10 647-UPW1A471MPD AWF-006 C6 470 6 cea: 470 10 647-UPW1A471MPD AWF-006 C9 100 6 cea: 100 10 647-UPW1A101MDD AWF-006 C10 100 6 cea: 100 10 647-UPW1A101MDD AWF-006 C11 2.2 25 cssa: 2.2 50 647-UKL1H2R2MDDANA AWF-006 C12 2.2 25 cssa: 2.2 50 647-UKL1H2R2MDDANA AWF-006 C19 100 25 cea: 100 25 647-UPW1E101MED AWF-006 C20 100 25 cea: 100 25 647-UPW1E101MED AWF-006 C21 220 16 cea: 220 16 647-UPW1C221MPD AWG-017 - CONTROL AMP AWG-017 C11 220 6 cea: 220 10 647-UPW1A221MED AWG-017 C12 220 6 cea: 220 10 647-UPW1A221MED AWG-017 C15 100 6 cea: 100 10 647-UPW1A101MDD AWG-017 C16 100 6 cea: 100 10 647-UPW1A101MDD AWG-017 C17 4.7 25 cssa: 4.7 25 647-UKL1E4R7KDDANA AWG-017 C18 4.7 25 cssa: 4.7 25 647-UKL1E4R7KDDANA AWH-022 - POWER AMP AWH-022 C1 .22 25 cssa: .22 50 667-ECQ-V1H224JL5 AWH-022 C2 .22 25 cssa: .22 50 667-ECQ-V1H224JL5 AWH-022 C3 .47 25 cssa: .47UF 50 667-ECQ-V1H474JL3 AWH-022 C4 .47 25 cssa: .47UF 50 667-ECQ-V1H474JL3 AWH-022 C9 47 10 cea: 47 10 647-UPW1A470MDD6 AWH-022 C10 47 10 cea: 47 10 647-UPW1A470MDD6 AWH-022 C11 330 10 cea: 330 10 647-UPW1A331MPD AWH-022 C12 330 10 cea: 330 10 647-UPW1A331MPD AWH-022 C17 47 50 cea: 47 50 647-UPW1H470MED AWH-022 C18 47 50 cea: 47 50 647-UPW1H470MED AWH-022 C19 47 50 cea: 47 63 647-UPW1J470MPD AWH-022 C20 47 50 cea: 47 63 647-UPW1J470MPD AWH-022 C21 22 10 cea: 22 10 647-UPW1A220MDD AWH-022 C22 22 10 cea: 22 10 647-UPW1A220MDD AWK-020 - FILTER AMP AWK-020 C1 1 50 cea: 1 50 647-UPW1H010MDD AWK-020 C2 1 50 cea: 1 50 647-UPW1H010MDD AWK-020 C7 10 16 cea: 10 16 647-UPW1C100MDD AWK-020 C8 10 16 cea: 10 16 647-UPW1C100MDD AWK-020 C9 330 25 cea: 330 25 647-UPW1E331MPD6 AWK-020 C10 330 25 cea: 330 25 647-UPW1E331MPD6 AWM-027 - PROTECTION UNIT AWM-027 C3 330 6 cea: 330 10 647-UPW1A331MPD AWM-027 C4 330 6 cea: 330 10 647-UPW1A331MPD AWM-027 C5 4.7 25 cea: 4.7 25 647-UKL1E4R7KDDANA AWM-027 C6 100 16 cea: 100 16 647-UPW1C101MED AWR-030 - POWER SUPPLY AWR-030 C6 220 50 cea: 220 63 647-UPW1J221MPD AWR-030 C7 220 50 cea: 220 63 647-UPW1J221MPD AWR-030 C8 220 50 cea: 220 63 647-UPW1J221MPD AWR-030 C9 220 50 cea: 220 63 647-UPW1J221MPD AWR-030 C10 100 50 cea: 100 63 647-UPW1J101MPD AWR-030 C11 100 50 cea: 100 63 647-UPW1J101MPD AWR-030 C12 10 16 cea: 10 35 647-UPW1V100MDD AWR-030 C13 10 16 cea: 10 35 647-UPW1V100MDD AWR-030 C16 330 35 cea: 330 50 647-UPW1H331MPD AWR-030 C17 220 50 cea: 220 63 647-UPW1J221MPD AWS-035 - SWITCH UNIT A AWS-035 C5 .47 25 cssa: .47 50 667-ECQ-V1H474JL3 AWS-035 C6 .47 25 cssa: .47 50 667-ECQ-V1H474JL3 AWS-035 C7 .47 25 cssa: .47 50 667-ECQ-V1H474JL3 AWS-035 C8 .47 25 cssa: .47 50 667-ECQ-V1H474JL3 AWS-036 - SWITCH UNIT B AWS-035 C1 1 50 cea: 1 50 647-UPW1H010MDD AWS-035 C2 1 50 cea: 1 50 647-UPW1H010MDD AWS-035 C3 10 16 cea: 10 16 647-UPW1C100MDD AWS-035 C4 10 16 cea: 10 16 647-UPW1C100MDD BOM 647-UKL1H2R2MDDANA | 4 647-UPW1A471MPD | 2 647-UPW1C101MED | 1 647-UPW1E101MED | 2 647-UPW1C221MPD | 1 647-UKL1E4R7KDDANA | 3 647-UPW1A470MDD6 | 2 647-UPW1A221MED | 2 647-UPW1A101MDD | 2 647-UPW1A470MDD6 | 2 647-UPW1A331MPD | 4 647-UPW1H470MED | 2 647-UPW1A220MDD | 2 647-UPW1H010MDD | 4 647-UPW1C100MDD | 4 647-UPW1E331MPD6 | 2 647-UPW1J221MPD | 5 647-UPW1J101MPD | 2 647-UPW1H331MPD | 1 667-ECQ-V1H224JL5 | 2 667-ECQ-V1H474JL3 | 6 647-UPW1V100MDD | 2 647-UPW1J470MPD | 2
That's a great job!!! not your fault they are running too close to the edge on the power supply caps, where I would increase the voltage ratings on the caps. 50's would be 63's, 35 would be 50, 16's at least 25's if not 35's. also power supply related: c19,c20 on the power amp, 50 to 63. and some problematic transistors as well. 2sa726's > ksa992's 2sc1312,1313 > ksc1845. IF you find a 2sc1451 > ksc3503
Thanks for the tips, Mark. I've updated the list with your suggestions. Still all currently(as of 8/18/12) in-stock. The filter caps are 10000uf 50v. Should I go with a higher voltage for these as well?
I was poking through my SA-8100 to see if there were any surprises lurking before I ordered parts and found one right off the bat. The control board AWG-017 in my unit is different than the one in the service manual. Mine is AWG-017B and it is studded with tantalum caps. I was able to find a diagram of my "B" board and posted it along with the board diagram from the service manual for comparison('B' board in green). I have also noticed that in a few cases what's on the diagram differs from what's on the board. Capacitance values are all the same but a few voltages (according to the tantalum color codes) are different. Here is the list of caps as printed on the diagram followed by what is actually on the board. All are tantalums except for C15, 16: C1 1 25……1 25 C2 1 25……1 25 C11 22 6.3……22 6.3 C12 22 16……22 6.3 C15 100 6.3 ……100 6.3 C16 100 6.3…….100 6.3 C17 4.7 25……4.7 16 C18 4.7 25……4.7 16 C21 2.2 16……2.2 16 C22 2.2 16……2.2 16 C23 2.2 16……2.2 16 I'm guessing for replacing the tantalums I should go with UKLs, and maybe stacked film for C1 & C2. I'm thinking I should also go with the higher voltage where there is a discrepancy. Is this a sound approach?
Yes, yes and yes. The tuning fork guides should have tantalum cap color codes. plus here: http://www.csgnetwork.com/capcctantcalc.html
Sorry for bumping an old thread with what is probably a very stupid question... but what do some of these numbers mean? I asume: AWR-030 C17 220 50 means that c17 is a 220UF 50V cap, but what does cea: 220 63 647-UPW1J221MPD mean? Thanks!
CEA: 220 63 647-UPW1J221MPD breaks down as follows: CEA is the Pioneer capacitor type code. 220 is the MF rating 63 is the replacement voltage (which can be higher than the original schematic calls for) 647- UPW1J221MPD is the Mouser Electronics part number for a Nichicon UPW series 220uf 63V radial lead capacitor. The Nichicon part number is UPW1J221MPD, the 647 prefix is Mouser speak for Nichicon brand parts. If you were buying Nichicon caps from another source, drop the 647- from the part number. Hope this helps!
Thanks! What do the numbers before "cea" mean? For example: AWR-030 is the board. C17 is the location. but what are 220 and 50 Thanks again
Mark the Fixer's capacitor list format goes like this: AWR-030 C17 220 50 cea: 220 63 647-UPW1J221MPD AWR-030 Is the Pioneer board number. C17 Is the position of the part per the circuit diagram. 220 Is the Pioneer service manual original uf rating of the capacitor. 50 Is the original spec voltage rating. CEA Is the Pioneer capacitor type code. 220 63 647-UPW1J221MPD Is as discussed earlier, the uf rating, voltage spec and Mouser part number of the recommended replacement part. Hope this helps!
Updating this post, adding in a transistor list! AWG-017-0 Q1, Q2, Q3, Q4 2SC1478 t or s 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6 2SA726 g or f 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q7, Q8 2SC1345 d or e 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWH-022-A Q1, Q2, Q3, Q4 2SA726 g or f 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6 2SC869 c or d 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Q7, Q8 2SA628A c or d 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q9, Q10 2SC1451 v or b 512-KSC3503DSTU to-126 ecb 300v .1a 1.2/7w 150mhz 40-320hfe Q11, Q12 2SD357 c or d 512-KSC2073TU to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q13, Q14 2SB527 c or d 512-KSA1220AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe Q15, Q16 2SD370 r or o 863-MJ21194G npn to-3 250v 16/30A 250W 8-75hfe 4mhz Q17, Q18 2SB530 r or o 863-MJ21193G pnp to-3 250v 16/30A 250W 8-75hfe 4mhz AWF-006-0 Q1, Q2, Q3, Q4 2SA774 t or s 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6, Q7, Q8 2SC1345 d or e 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWM-027-A Q1, Q2 2SC857K-A 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q3, Q4 2SC945 r or q 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Q5 2SA73 (ASSUMING this is a 2SA733) 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q6 2SC945 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe AWK-020-0 Q1, Q2 2SC1345 e or d 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWR-030-0 Q1 2SD313 d or e 512-KSC2073TU npn to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q2 2SB507 512-KSA940TU pnp to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q3 2SC945 r or q 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Q4 2SA733 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWS-036-0 Q1, Q2 2SC1345 g or f 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe BOM: 512-KSC1845FTA 16 512-KSA992FBU 14 512-KSC2383YTA 6 512-KSC3503DSTU 2 512-KSC2073TU 3 512-KSA1220AYS 2 512-KSA940TU 1 863-MJ21194G 2 863-MJ21193G 2
I notice there are no filter caps listed here. Are these appropriate replacements? http://uk.mouser.com/ProductDetail/Nichicon/UVZ1H103MRD/?qs=sGAEpiMZZMv9ULLAfKm5f7OjTVOlS4Og
Close, with some speed, gain and power mismatches... youse guyz shore keep me hoppin, stampin out dem spot fires before they spread..... :sigh: AWF-006-0 phono amp Q1, Q2, Q3, Q4 2SA774 t or s 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6, Q7, Q8 2SC1345 d or e 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWS-036-0 switch unit b Q1, Q2 2SC1345 g or f 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWG-017-0 control amp Q1, Q2, Q3, Q4 2SC1478 t or s 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6 2SA726 g or f 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q7, Q8 2SC1345 d or e 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWK-020-0 filter amp Q1, Q2 2SC1345 e or d 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWH-022-A power amp Q1, Q2, Q3, Q4 2SA726 g or f 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6 2SC869 c or d 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Q7, Q8 2SA628A c or d 512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.34 (R=60-120, O=100/200, Y=160/320) Q9, Q10 2SC1451 v or b 512-KSC3503DSTU to-126 ecb 300v .1a 1.2/7w 150mhz 40-320hfe Q11, Q12 2SD357 c or d 512-KSC2690AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe Q13, Q14 2SB527 c or d 512-KSA1220AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe Q15, Q16 2SD370 r or o 863-MJ21194G npn to-3 250v 16/30A 250W 8-75hfe 4mhz Q17, Q18 2SB530 r or o 863-MJ21193G pnp to-3 250v 16/30A 250W 8-75hfe 4mhz AWM-027-A protection Q1, Q2 2SC857K-A 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q3, Q4 2SC945 r or q 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5 2SA73 (ASSUMING this is a 2SA733) 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q6 2SC945 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe q7 2SA1384 512-KSC2690AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe AWR-030-0 power supply Q1 2SD313 d or e 512-KSC2073TU npn to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q2 2SB507 512-KSA940TU pnp to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q3 2SC945 r or q 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Q4 2SA733 512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.34 marty, look at the differences - they will be instructive for the future... (please... in the vein of teaching fishing, rather than fishing for...) How about melding the caps, transistors, and adding in the (originals as placeholders - I'll add the rest) diodes and trimpots and this'll be one jim-dandy of a list..
Electrically they are fine - mechanically they are another story - they are 25 mm in diameter (one inch) while the originals are most certainly significantly larger, and are mounted with circular clamps attached to the chassis. Generally IF we can find a slightly higher voltage capacitor with the SAME diameter, we use it, just to simplify things... Increasing the capacitance should be done cautiously unless the unit has a soft start circuit (and usually a toroidal transformer) in which case, taming the initial power on current surge is provided for. up to 50 percent capacitance increase is ok, because the old caps could have had a margin of error of -20 percent to plus 80 percent of listed capacitance value. Modern caps are specified much more closely than that. The difficulty comes in with a large increase of capacitance which strains the surge carrying capability of the rectifier diodes. New (not tired) rectifier diodes are then called for (perhaps 1n5404 in this case, have to look closer..) FAST rectifiers WILL inject noise (hum) that necessitates checking the snubber capacitors across them. Also the new caps can usually take an unlisted 10 percent spike in voltage - while the older caps can take 15 percent or a bit greater, but DON'T try an 11 percent spike on a 10 percent cap - that's trouble... Spikes are considered on exactly these capacitors, because they have a powerful transformer directly connecting them to the mains, where ANYTHING can happen.. This seems save as they run a bit under 40 volts and are rated for 50 volts. THEN there is the question of the electrical connection method of the original cap, and how to modify that. Now, when the differences are SO large of a magnitude that it becomes ridiculous to try that, I have been known to fabricate small pc boards, that are larger than the capacitor's through-hole, and have mounting holes in these circuit boards that match up with the mounting holes of the capacitor clamps. Then I make sure NO foils are touching or near the chassis, and solder the capa to the foil, while arranging an appropriate connection method. WHY am I telling you "how to build a watch", instead of "telling you the time"? Because I can't SEE or measure the initail conditions, nor do i KNOW what choices of Capacitors you will be presented with for purchase. The BIG caps always present the most difficulty upon replacement.
wow, Now I'm definitely confused... this amp is turning into one of those projects that make you realise just how much learning there is involved in repairing one of these. I've been looking on mouser for the correct filter caps... the sheer number of components, termination styles etc is becoming rather frustrating to say the least. As you rightly pointed out, the original caps are huge, with a clamp holding them in place - ideally, I'd rather not have to add any extra PCB's, but keep everything as close as possible to the original (with the new components). I think I'll wait until you've both formulated a list... I know that's not the best way to learn, but I'm at the point where I just want this thing back in the rack where it belongs.
OK, How about these for the filter caps. http://uk.mouser.com/ProductDetail/...103MA50T/?qs=sGAEpiMZZMtb0v8Qz6li854QGVaXTMBn The originals are 10000UF 50V. I asume going up to 63V won't hurt anything? Incidentally, what are the general rules regarding higher voltage caps? I notice the original list (first post) lists caps that are slightly higher voltages than the originals as Mark suggested.
Here's the transistor list with Mark's suggested transistor corrections in bold below the ones I looked up by simply cross referencing the Pioneer part numbers on this forum. The differences can be seen more easily with both side by side. I've asked some questions in the interest of learning something new! AWG-017-0 Q1, Q2, Q3, Q4 2SC1478 t or s 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6 2SA726 g or f 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q7, Q8 2SC1345 d or e 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWH-022-A Q1, Q2, Q3, Q4 2SA726 g or f 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6 2SC869 c or d 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Is the higher Voltage of the 1013 needed on this circuit? Maybe a quieter transistor substitution? Q7, Q8 2SA628A c or d 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q7, Q8 2SA628A c or d 512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.34 (R=60-120, O=100/200, Y=160/320) Q9, Q10 2SC1451 v or b 512-KSC3503DSTU to-126 ecb 300v .1a 1.2/7w 150mhz 40-320hfe I'm guessing that the smaller size and/or the higher frequency is needed here? Q11, Q12 2SD357 c or d 512-KSC2073TU to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q11, Q12 2SD357 c or d 512-KSC2690AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe Q13, Q14 2SB527 c or d 512-KSA1220AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe Q15, Q16 2SD370 r or o 863-MJ21194G npn to-3 250v 16/30A 250W 8-75hfe 4mhz Q17, Q18 2SB530 r or o 863-MJ21193G pnp to-3 250v 16/30A 250W 8-75hfe 4mhz AWF-006-0 Q1, Q2, Q3, Q4 2SA774 t or s 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5, Q6, Q7, Q8 2SC1345 d or e 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWM-027-A Q1, Q2 2SC857K-A 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Is the higher frequency of the 1845 or the better HFE needed here? Q3, Q4 2SC945 r or q 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe Q3, Q4 2SC945 r or q 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q5 2SA73 (ASSUMING this is a 2SA733) 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q6 2SC945 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe I guess I missed this one on the original list D'Oh! :bash: q7 2SA1384 512-KSC2690AYS to-126 ecb 120/a160 1.2a 20w 155mhz 35-320hfe AWK-020-0 Q1, Q2 2SC1345 e or d 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe AWR-030-0 Q1 2SD313 d or e 512-KSC2073TU npn to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q2 2SB507 512-KSA940TU pnp to-220 bce 150v 1.5a 25w 4mhz 40-140hfe Q3 2SC945 r or q 512-KSC2383YTA to-92L ecb 160v 1a .9w 50mhz 160-320hfe I'm ass-u-ming it's the higher current capability that's the goal, here, correct? Q4 2SA733 512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe Q4 2SA733 512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.34 AWS-036-0 Q1, Q2 2SC1345 g or f 512-KSC1845FTA (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe CORRECTED TRANSISTOR BOM :thmbsp:: 512-KSC1845FTA 18 512-KSA992FBU 11 512-KSC2383YTA 4 512-KSC3503DSTU 2 512-KSC2073TU 1 512-KSC2690AYS 3 512-KSA1220AYS 2 512-KSA940TU 1 512-KSA1013YBU 3 863-MJ21194G 2 863-MJ21193G 2
Thanks; those are useful questions. What do you think of the filter caps in my previous post? Would you say they're suitable? Don't want to blow something up
Electrically, they should be fine. Going higher in voltage is OK, and by doing so, you might be able to find some that have the same diameter as your old ones. Do you know what diameter the old, original capacitors are? Is there room to go taller? What style leads do the old capacitors have, the last ones you listed have "Snap In" leads that might not fit the original holes in the board. The earlier ones may be easier to use due to the longer wire leads Any way to post a pic of the original caps and their mountings? Can you measure how far apart the leads are? I have an old HH Scott R326 receiver that I recently recapped. The old caps were pretty large but mounted in steel brackets, they were 35mm OD, I found a pair of Nichicons that would work electrically, except they wouldn't fit the mounting brackets, (25mm) so I cut the old capacitors open, dug out the guts and used RTV sealer to mount the much smaller new ones inside the old shell. People usually call this "Restuffing" a capacitor, lots of you-tubes about this. On my SX-780, I used leaded 10,000uf 50V caps that although smaller, fit the board just fine. (The original caps on the SX-780 are 8,000 uf, increasing the capacitance slightly is generally OK, also.) Here are the 10,000uf 50V ones I used in my SX-780 : http://uk.mouser.com/ProductDetail/...CQCDnhPtUuyF93jo5KYEFcqykHUnohf%2b0RfEsbhYg== The Nichicon KW series versions are "Audio Grade", a little more money than the UVZ1H103MRD you asked about in your first post asking about them, rated at 2000 hours load life instead of 1000, 4,000 mA Ripple current instead of 2,850mA, but only 85*C vs 105*C for the other ones. Not sure what difference it actually makes in the filters, though. Hope this helps!
Thanks, very informative post. I'm not sure of the exact size of the old ones - I'll have to pull them out and measure them. I'd guess about 35mm diameter and 55-60mm height. They're not mounted on a board, but in clamps that clamp around the cap and screw to the chassi. What's the general rule regarding caps and voltage? I'm asuming there must be a limit to how high you can go?