The is a next transistor which is center leg is connected to a resistor and to the emitor of the a1543 is that the transistor that your talking?
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#21:
I don't know. Give me the voltages on it.
#22:
Not likely. This amp looks like it went swimming. If so, it may not be worth repairing.
I don't know. Give me the voltages on it.
#22:
Not likely. This amp looks like it went swimming. If so, it may not be worth repairing.
Clean up r board with alcohol and then ill try to send you a better quality picture of the trace, and no I didn't went for a swim. The board had Grease all over it so I had to clean it with gasoline what could be damaged by using gas? To clean Grease
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There is a cracked diode in the remote section
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Picture from the back of the board
try to see if you can make anything out from that please
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Yes the components are scarcely the same, I have r101 r102,r103 which means d18 on that diagram is the same as this one?
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Are you asking?
If that's the same as D18, it will have to be replaced. For now, you could replace it with a piece of wire to see if the amp will power up. Don't leave it powered on for more than about 10 seconds at a time.
If that's the same as D18, it will have to be replaced. For now, you could replace it with a piece of wire to see if the amp will power up. Don't leave it powered on for more than about 10 seconds at a time.
Don't run it without having the transistors tightly clamped to the heatsinks.
That zener is likely a 5.1v.
That zener is likely a 5.1v.
I have no experience with zener what should looking for or testing for?
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You can see if it produces audio in 10 seconds.
If the transistors are clamped down, you can run it longer. The risk is to the resistor that feeds the zener. It will be dissipating more power without the voltage drop of the zener and may fail.
If the transistors are clamped down, you can run it longer. The risk is to the resistor that feeds the zener. It will be dissipating more power without the voltage drop of the zener and may fail.
A zener tests like a normal diode.
You don't need to test. Just replace it if the original was broken.
You don't need to test. Just replace it if the original was broken.
Ik that when replacing a zener is different from a regular diode
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