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Troubleshooting RS-2004A

Stink Bear

Stink Bear

Active Member
Finally getting started on this receiver. It's been a while since I got it and did the initial look but I'm pretty sure I remember that there were 2 blown fuses, the right power pack was bad (pins 8 & 9 shorted) and R46 is obviously burnt.
I'm still pretty new at this so I'm looking for some help.
I have a replacement power pack coming. I figured at the minimum I should check Q4, Q12, Q14, & Q16, and of course replace R46.
Maybe I should check all transistors on the amp board?
Anything else I should check?
 
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I decided to go ahead and check all of the transistors in the right channel of the amp board along with Q03, Q11. and Q17.
Q10 is shorted between the emitter and collector.
Q16 is shorted between all 3 legs.
The power pack is shorted between pins 8 & 9.
This circuit is beyond my understanding. It looks to me like the power pack very well could have taken out R46 and Q16. I'm not so sure about Q10.
I'm wondering if there is any reason to check transistors in the left channel.
Is there anything else I should check in the right channel?
 
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