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SX737 Issue - no sound

Is C24 backwards? If not, Unsolder one end of C24, turn the High pass switch off, power up and see if the dc on pin 3 is gone, or just replace C24.
 
merlynski said:
Is C24 backwards? If not, Unsolder one end of C24, turn the High pass switch off, power up and see if the dc on pin 3 is gone, or just replace C24.
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It wasn’t backwards, never been touched AFAIK. I unsoldered one leg, engaged the filter, and now I’m reading 0.0mv DC!
Can I use the receiver in the mean time until the replacement for C24 comes in?
 
petehall347 said:
if it isnt c24 i will eat my hat and say q6 and c22 are shorted and you measured c24 in circuit .. no way it can be that ..
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Been here before, seen this before, replacing C24 fixed it.
YoSeth said:
It wasn’t backwards, never been touched AFAIK. I unsoldered one leg, engaged the filter, and now I’m reading 0.0mv DC!
Can I use the receiver in the mean time until the replacement for C24 comes in?
Click to expand...
You won't get any sound from that channel with it lifted . . .

EDIT: correct Q24 to C24 :oops:
 
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Do the same for the left channel, too.
If it was mine I would order some of 1µF and 2.2µF film caps and replace all of the electrolytics of those values in the signal path in the whole unit (I did in my SX-1050) 505-MKS22.2/50/5 for 2.2µF 50v 5%, and 80-R82DC4100Z360J for 1µF 63v 5%. There are a couple of 4.7µF caps at the input to the power amp also, 505-MKS2B044701K00JS (C1, C2)
 
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Just updating to say I replaced C23 and C24 last night. No more dc resistance, and everything works. We are back in business! A big thanks for everyone’s help. This is a good forum :music:
 
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