I have a 2245 that I received in non working condition, it had a broken power switch which I replaced. Its relay isn't allowing the receiver to come out of protection. I'm assuming the relay works, the power supply is adjustable to 35V, I recapped the 3 known problem caps on the PS board, 220uf, 47uf, 10uf. The right side amp had been worked on before it came to me. The outputs were replaced along with a resistor and a cylindrical transistor that attaches to the heat sync.
I initially powered it up with the dim bulb tester and noticed the right side outputs getting hot. I pulled the outputs which checked out good with diode test. After replacing 3 caps on the PS board, I powered it up again with outputs on right side removed to see if it would activate the relay, which it did not. Then it started getting real hot and smelled like it was cooking something on the rt driver board. The 100 ohm resistors R786 and R787 were getting real hot to touch and seemed to be what I was smelling.
Something of interest that I found; There is a large pair of 10 ohm resistors R784 and R785 that are have a wire jumper on the backside of the board. While checking resistors I found a lot of inconsistency in the values marked on the SM.
This is as far as I can go, if somebody could point me in the right direction it would be appreciated. I have limited experience here.
I initially powered it up with the dim bulb tester and noticed the right side outputs getting hot. I pulled the outputs which checked out good with diode test. After replacing 3 caps on the PS board, I powered it up again with outputs on right side removed to see if it would activate the relay, which it did not. Then it started getting real hot and smelled like it was cooking something on the rt driver board. The 100 ohm resistors R786 and R787 were getting real hot to touch and seemed to be what I was smelling.
Something of interest that I found; There is a large pair of 10 ohm resistors R784 and R785 that are have a wire jumper on the backside of the board. While checking resistors I found a lot of inconsistency in the values marked on the SM.
This is as far as I can go, if somebody could point me in the right direction it would be appreciated. I have limited experience here.