Onkyo HT-R670 help

[ripnet]

Hi,

I have a receiver that blew a cap (C6044). I replaced it with another and it blew immediately. Any thoughts on what I should do next? I'm thinking of sucking Q6034 and Q6044 out and testing those next.

Any help would be appreciated. Attached is the circuit diagram I managed to find online. C6044 is just right of center.

Thanks

[mij59]

Also check R6084, Q6054, R6104, Q6064, R6094 and R6074.
May be something like 100 V across the cap.
Pictures may be helpful.

[ripnet]

Also check R6084, Q6054, R6104, Q6064, R6094 and R6074.
May be something like 100 V across the cap.
Pictures may be helpful.

What pictures would you like? I have a clip of the PCB layout attached here.

[mij59]

Pictures of the actual pcb would be nice  (both sides)

[mzacharias]

1. Bad output transistors.
2. One or more base current limiting resistors. (You can't really have enough DC voltage across that cap unless the BE junctions and/or R6084 or R6094 are open.)
3. I would seriously check Q5044, Q5034, and the associated 100 ohm resistors R5164 and R5174.
4. The bias transistor Q6014 probably didn't survive either. Not sure about Q6004.