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Need replacement cap

p6810-nd it is then, EW (6800uf 63v). Doubling the uf won't hurt eh... Pricey little piece.

Will post the results once I get it and get it in.

As for the SX-525, youre right; not Pioneer's TOTL but in
my day it WAS COML (common of the line) LOL. See quite a few of them around. Just saw another one on Ebay that was in great shape for a low price and probably just needs a recap.
 
NOTE:

I'm just doing my PS and amp board to start with here.

Having one hell of a time finding the transistors. Had to order the few on the PS board from parts-express; Digi-key and Mouser either did not have them or would only sell them to me in lots of 100 etc... Its mostly been the former (did not list them).

The amp board is a major pain in the butt so far for transistors.. Mouser and Digikey dont even list most if not all of the transistors.

Where is a good source then for my transistors? Do I need to start a new thread with the parts list? I took the numbers right off of the transistors on the board itself and matched them up to the schematic.
 
Parts Express sells crappy Chinese remarked transistors. I buy a lot of stuff from PE, but NOT transistors.

Pretty much every transistor in that receiver has been out of production for at least a decade & 1/2. This is rarely a problem, as there are good modern substitutes for 99.9% of them. If there's something you're looking for, tell us where it is used, what the number is, and identify the form factor, and myself or someone else will recommend a replacement.
 
Amp

Screwed to the heatsinks, leads to the board:
Look like TO-220 or 202

2- 2SC789
2- 2SA489

Schematic states the same, but 2 of them were different ( 1 B633dom green colored, 1- D613 E 2h).

Board

Look like TO-92 or TO-92L

6- 2SC1318
4- 2SA726
2- 2SA720
 
A's and B's are pnp,
C's and D's are npn

TO-220, on this type case lead designations don't change.
2- 2SA489 pnp 70v 4a 30w 40-240hfe 3mhz
2- 2SC789 npn 70v 4a 30w 40-240hfe 3mhz


512-KSB596OTU pnp to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
512-KSD526O npn to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
or
863-TIP42CG pnp to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.70
863-TIP41CG npn to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.64


4- 2SA726 pnp bce to-92 50v 0.1a 0.2w 500hfe 100mhz
512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe $0.05 ea

2- 2SA720 pnp ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.17

6- 2SC1318 npn ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSC2383YBU to-92 ecb 160v 1a .9w 50mhz 160-320hfe $0.17
 
Thanks Mark!

Now why Digikey's "techs" could not find them (or translate what I've got and need into something in inventory and usable) is beyond me...

EW- will you tell me or educate me why doubling the uF on the recommended p6810-nd 6800uf 63v cap from 3300uF is ok?

Happy New Year you guys
 
We're working with pretty small values here, as power supply caps go. The difference in surge currents between a 3300µf and a 6800µf cap aren't something to be too concerned about. If it bothers you, find a 4700µf cap instead.
 
markthefixer said:
A's and B's are pnp,
C's and D's are npn

TO-220, on this type case lead designations don't change.
2- 2SA489 pnp 70v 4a 30w 40-240hfe 3mhz
2- 2SC789 npn 70v 4a 30w 40-240hfe 3mhz


512-KSB596OTU pnp to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
512-KSD526O npn to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
or
863-TIP42CG pnp to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.70
863-TIP41CG npn to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.64


4- 2SA726 pnp bce to-92 50v 0.1a 0.2w 500hfe 100mhz
512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe $0.05 ea

2- 2SA720 pnp ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.17

6- 2SC1318 npn ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSC2383YBU to-92 ecb 160v 1a .9w 50mhz 160-320hfe $0.17
Click to expand...


512-KSB596OTU pnp to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
512-KSD526O npn to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62

Not stocked and avaliable at Digikey

4- 2SA726 pnp bce to-92 50v 0.1a 0.2w 500hfe 100mhz
512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe $0.05 ea

Digikey will only sell 10,000 of them at $202.00. Don't need ten thousand of them...

2- 2SA720 pnp ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.17

Digikey will only sell
 
markthefixer said:
A's and B's are pnp,
C's and D's are npn

TO-220, on this type case lead designations don't change.
2- 2SA489 pnp 70v 4a 30w 40-240hfe 3mhz
2- 2SC789 npn 70v 4a 30w 40-240hfe 3mhz


512-KSB596OTU pnp to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
512-KSD526O npn to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
or
863-TIP42CG pnp to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.70
863-TIP41CG npn to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.64


4- 2SA726 pnp bce to-92 50v 0.1a 0.2w 500hfe 100mhz
512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe $0.05 ea

2- 2SA720 pnp ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.17

6- 2SC1318 npn ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSC2383YBU to-92 ecb 160v 1a .9w 50mhz 160-320hfe $0.17
Click to expand...


512-KSB596OTU pnp to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62
512-KSD526O npn to-220 bce 80v 4a 30w 3mhz 15-240hfe $0.62

Not stocked and avaliable at Digikey

4- 2SA726 pnp bce to-92 50v 0.1a 0.2w 500hfe 100mhz
512-KSA992FBU (ln)to-92 ecb 120v .05a .5w 100mhz 150-800hfe $0.05 ea

Digikey will only sell 10,000 of them at $202.00. Don't need ten thousand of them...

2- 2SA720 pnp ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSA1013YBU to-92L ecb 160v 1a .9w 50mhz 160-320hfe $0.17

Digikey will only sell 6,000 of them at a time. Don't need six thousand of them @ $383.40

6- 2SC1318 npn ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
512-KSC2383YBU to-92 ecb 160v 1a .9w 50mhz 160-320hfe $0.17

Digikey will only sell 6,00 of them. Don't need six thousand. Need 6 ...
 
The more capacitance you have in the circuit will cause a larger current flow as the capacitor charges. You have to consider what this will do to the other components that the current will flow through. If EW says it's okay, you won't have any problem. Good Luck.

Regards. Ron.
 
A's and B's are pnp,
C's and D's are npn

TO-220, on this type case lead designations don't change.
2- 2SA489 pnp 70v 4a 30w 40-240hfe 3mhz
TIP42CGOS-ND pnp to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.72

2- 2SC789 npn 70v 4a 30w 40-240hfe 3mhz
TIP41CGOS-ND npn to-220 bce 100v 6a 65w 3mhz 30-75hfe $0.76


4- 2SA726 pnp bce to-92 50v 0.1a 0.2w 500hfe 100mhz
2- 2SA720 pnp ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
ZTX795A-ND PNP TO-92E ebc 140v 0.5a 1.5w 100mhz 100-800hfe $1.93 ea


6- 2SC1318 npn ecb to-92 50v 1a 0.625w 85-240hfe 200mhz
ZTX694B-ND NPN TO-92E ebc 120v 0.5a 1.5w 130mhz 150-500hfe $1.62 ea
 
See original post-

Replaced it with a 'standard' Nichicon KW radial.

Will see how it works out after rebuild/recap is finished.

A little scary- the Nichicon seems to be about 1/3rd the size of the tank-built original. FYI- the original was 4 post and built like a tank, but the 4 post was only splitting two per side (black ground).

So . . . will see if the replacement is what it's supposed to be, without spending $28 + for some of the suggestions EW makes in other threads for similar cap replacements.

Everything is so vague in this help thread.. will just have to see.

PLEASE see post with the pic attached I attached of the original.
 
EW, Mark

Addendum:

EW, Mark- Very simply put, is it OK to replace CE type block 'lytic caps with CE type aluminum lytics'? Thats all this thread really boiled down to.

See pdf attachment.

Thanks again guys.
 

Attachments

WTF is a 'block' electrolytic? Yes, I saw the attachment. I suppose the author is referring to a 'large can electrolytic' as a 'block', as far as I can tell. Large cans are designed to deal with large currents and have an abundant ability to dissipate heat...beyond the capabilities of a standard radial-lead electrolytic (at least on paper).

If this is still about the 3300µf supply cap, my recommendation hasn't changed.
 
Block is as exactly as vintage Pioneer used to call them, and as the circa photo description in the pdf shows.

EW, your recommendation was for this: P7490-ND. A lot higher uf. Got it ordered from Digikey but hasnt arrived yet.

I installed this: http://www.mouser.com/ProductDetail...GAEpiMZZMukHu%2bjC5l7YeDvmDiEepL4V5Q86cGyDas=

Havent got the whole project done yet (this one anyways) so it hasnt been fired up.

So are you saying the Nichicon KW won't handle the heat and current and 'ripple', and will fry the Nichicon and hopefully not anything else?

Earlier in this help thread, people kept saying just find a 3300uf 63v. Now it is KNOWN that Pioneer called these CE(w) block caps you know as large can.

I could care less about the size. It's the TYPE and what will work as good or better.
 
High-quality modern caps are pretty tough...who knows? That little Nichicon might be fine for the next 20 years. I simply like installing parts that are designed to do the job that I'm asking it to do, and that little Nichicon was not intended to act as the sole filter cap for a hi-fi receiver. Doesn't mean it won't work, it's just not what it was built for.
 
I hear you.
It's not the sole filter cap though. Got 2 more that are 2200uf 35v I did the same thing with (replace with Nich KW).

All I want to know is if they will fry and/or damage anything else. As I posted before, they are built good and ok, abut are only about 1/3-1/2 the size.
 
Rockmore said:
I hear you.
It's not the sole filter cap though. Got 2 more that are 2200uf 35v I did the same thing with (replace with Nich KW).
Click to expand...
I'm afraid it is...there is NO other cap for PS filtering on the supply rails for the amplifier. The 2200µf 35V caps are DC blockers for the output, and serve a completely different purpose.

Will it blow up? Doubtful. But it's certainly one of those things that, if it came to me for some sort of repair, that I'd look at and shake my head.
 
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