Ouch... I feel your pain.
You definitely should use an incandescent light bulb to power up the amp. (40W - 60W)
Do you know how to do this?
Some more transistors will most likely be bad. It's hard to tell from here, Check diodes as well.
You have no other option than to very thoroughly check most semiconductors.
What about R243?
Very neat work BTW.
- https://www.diyaudio.com/community/...lp-follow-the-short-trace.419746/post-7841476
You definitely should use an incandescent light bulb to power up the amp. (40W - 60W)
Do you know how to do this?
Some more transistors will most likely be bad. It's hard to tell from here, Check diodes as well.
You have no other option than to very thoroughly check most semiconductors.
What about R243?
Very neat work BTW.
- https://www.diyaudio.com/community/...lp-follow-the-short-trace.419746/post-7841476
You mean putting a light bulb into the fuse socket?... no never did. Think i only have 5-10 watt bulbs here ...
R243 is replaced a does not blow anymore
R243 is replaced a does not blow anymore
You will want to make something like this, and you will need to find a 40 or 60 Watt bulb or a variac.
The light bulb acts as a protection in case excessive current threatens to flow through the amp.
Instead of a burning amp, you'll get a glowing lamp. 🙂
With a variac, you slowly turn the voltage up from 0 to 230V and a good one has an ampere meter so you can monitor the current.
If current rises quickly at low voltage, you know something is (still) wrong. Unfortunately, they are more expensive.
https://www.google.com/search?q=variac
A cheap lightbulb is mandatory. Without, you'll keep burning transistors. 🙂
The light bulb acts as a protection in case excessive current threatens to flow through the amp.
Instead of a burning amp, you'll get a glowing lamp. 🙂
With a variac, you slowly turn the voltage up from 0 to 230V and a good one has an ampere meter so you can monitor the current.
If current rises quickly at low voltage, you know something is (still) wrong. Unfortunately, they are more expensive.
https://www.google.com/search?q=variac
A cheap lightbulb is mandatory. Without, you'll keep burning transistors. 🙂
Thanks for the helpful advises! After a long night of soldering in and out finding the bad resistors, the solution was closer to the short accident as I thought. Altough those big white 0.68 Ohm 3W resistors measured allright all the time - as soon as I changed those to the one's that were in my older C352 - the amp doesn't shut down anymore and also the "POP" sound is gone. The amp works absolutely fine again👌
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