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Realistic STA 2100 - No FM output

Jimhops

Sep 10, 2020
7
Joined
Sep 10, 2020
Messages
7
Hello everyone. I am a new member and am restoring this reciever for my son. Everything works except I am getting no FM output. I have re capped the power supply, pre amp, main amp, and FM Dolby board. Also replaced all the VD- 1221 diodes with 1N4148s wired
in series. I feel the problem lies in the FM Dolby board. I get signal in the board, just no output. AM is fine. Any help would be greatly appreciated. I am attaching a pic of the board and a schematic. Thanks.
 

bertus

Moderator
Nov 8, 2019
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Nov 8, 2019
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3,392
Hello,

In the title of the thread you state the STA2000.
The manual is for the STA2100.
Wich set do you have?

Bertus
 

Jimhops

Sep 10, 2020
7
Joined
Sep 10, 2020
Messages
7
No signal at 4 or 5. Signal at pins 25,26,8,10, 11.
No FM at all output to speakers. I have signal on pin 2 of IC204. Strongest at pin 3.
 

bertus

Moderator
Nov 8, 2019
3,392
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Nov 8, 2019
Messages
3,392
Hello,

It would have been nice if you showed the solution also here.
Without the link that @Ylli showed, we would have noy known that the set is working again.

Bertus
 
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