Watching from the sidelines.
Rooting for a happy ending, and with this brain trust, we'll get there. Be patient.
Rooting for a happy ending, and with this brain trust, we'll get there. Be patient.
Sansui 9090 re-cap gone bad
Your caps seems fine to me.
DBT
Be sure outputs are ok and with the mica pads.
On power supply
Check C09 and C08 for short ( not usual but can happen)
I bet D02, D03 are ok.
Check D01
DBT
Be sure outputs are ok and with the mica pads.
On power supply
Check C09 and C08 for short ( not usual but can happen)
I bet D02, D03 are ok.
Check D01
The unit does come out of protection mode (green light) with the F2436 driver board removed.
I watched that series of videos before I started the re-cap, those were are great educational videos, I learned a few things.
Oh that's very important.
Look for any broken pad on your board. What else did you replace on that board?
I'm checking c09, c08, and d01 on f2556 power supply now, De-soldering tool is warming up, Ill get right back to you with the results.....
tnsilver
Stereo Puppy
That's vital info. Good! The driver amp is also the only board we haven't seen pictures of yet. You may want to review this thread before you verify your F2436 driver amp components. Once again - do not power up the unit w/o a DBT, especially when testing with the driver amp installed.
Not necesary, the problem is probably on F-2436, go with Tnsilver post, is pure gold
on f2456 power supply C8 according to what is shown on cap should be .01 uf and reads 9.66nf. According to the cross reference chart I found on line .01uf =10nf, so I think its ok.
Same with c9 oe is .01uf. actual is 9.60 nf. should be ok
I checked d1 on f2546 and across one leg shows .561 and the other shows .551, I think this is ok too.
Outputs I believe are ok all 8 test around the same 0.5xx mica pads are all in place.
Attachments
Here is a copy of my notes, witch shows everything I replaced on the boards, the components original value and the actual value
Attachments
Here is a pic of the driver board f2436 after the re-cap, I was able to test this after the re-cap, it was the first board I did.
Attachments
Missed a couple. C01 and C02..
Not necesary, the problem is probably on F-2436, go with Tnsilver post, is pure gold
Ill look over f2436, the fuse on F2546 F03 and f04 still blows with board F2436 out.
For some reason those were not included in the kit I bought. If I get this thing working again ill look into those 2.
Ok let's recap.
- Unit comes out of protection without driver board but F03/04 10A fuses blows.
- With F2436 in place unit do not comes out of protection.
- Unit was working fine with F2436 recapped
- After recap all others boards, fuses start to blow.
- No semiconductors were replaced
- 'fusistors" were replaced
Right?
- Unit comes out of protection without driver board but F03/04 10A fuses blows.
- With F2436 in place unit do not comes out of protection.
- Unit was working fine with F2436 recapped
- After recap all others boards, fuses start to blow.
- No semiconductors were replaced
- 'fusistors" were replaced
Right?
Last edited:
The Fuxtor
Addicted Member
Looks good there
The Fuxtor
Addicted Member
The unit blows the 10 amp fuse with F2436 driver board installed or removed.
The unit does come out of protection mode with F2436 driver board installed or removed.
The unit did work fine after I re-caped F2436 driver board, and still worked after i re-caped f2546 power supply, and f2541 Equalizer board, then I quit checking.
no semi conductors, just caps and fusistors and tr1,2,3,4 on f2436.