If that's the case, I'd suspect that capacitor. Instead of removing the board from the amp to remove the cap, work it back and forth (gently) until it's leads break. With the cap out of the circuit, what do you read across R34?
R34 reads 32.9Ohms still with the C34 cap removed.
There is evidence looking at the cap from the under side of it that it has melted. (boiled)
There is evidence looking at the cap from the under side of it that it has melted. (boiled)
The resistor and capacitor you have circled are R70 & C37.
R34 & C34 are next to each other on the other side of the transformer, next to where the winding leg goes into the board.
R34 is a blue 33Ohm resistor
C34 is a 683K63 piece...
R70 reads 940Ohms
Nothing plugged in...
R34 & C34 are next to each other on the other side of the transformer, next to where the winding leg goes into the board.
R34 is a blue 33Ohm resistor
C34 is a 683K63 piece...
R70 reads 940Ohms
Nothing plugged in...
Lanzar just sent me the schematic for this amp, almost immediately after asking too!
Let me know if anyone wants it 😉
Let me know if anyone wants it 😉
No, I don't get any Ohm reading now. (I disconnected the power when I removed C34, should I hook it back up minus cap?)
No beep on continuity check either. It reads 983 (Ohms, right?)
No beep on continuity check either. It reads 983 (Ohms, right?)
What's different (except for the cap you removed) from when you read 18 ohms from the RCA shields to the amp's ground?
Don't reconnect it yet.
Don't reconnect it yet.
Were the speaker wires connected when you measured the resistance from the RCA shield to the amp's ground?
What is the resistance from the amp's input RCA shields to the amp's heatsink?
What is the resistance from the amp's input RCA shields to the amp's heatsink?
No, I disconnected the speaker wires.
I cannot get ANY reading at all from the RCA shields to the heatsink.
I can still get a reading of about 1000 to the negative terminal though.
Would that have anything to do with the big blue resistors between
-SP to heatsink &
-ve to heatsink ?
There is also that resistor that is between the RCA ground and heatsink too...
I cannot get ANY reading at all from the RCA shields to the heatsink.
I can still get a reading of about 1000 to the negative terminal though.
Would that have anything to do with the big blue resistors between
-SP to heatsink &
-ve to heatsink ?
There is also that resistor that is between the RCA ground and heatsink too...
Do you think somebody added these caps in?
An externally hosted image should be here but it was not working when we last tested it.
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