Today I finished my first big DIY project- Dynalo powered by a Sigma 22. While hastily troubleshooting a minor problem I accidentally wired the amp in reverse polarity. It didn't stay on for a long time (<6s) but still- it won't work and voltages for most points are all over the place.
Can someone please tell me what parts I should be expecting to replace? Both PCB's look intact and none of the electrolytic caps even went warm.
Can someone please tell me what parts I should be expecting to replace? Both PCB's look intact and none of the electrolytic caps even went warm.
So, it seems that current sources and the input stage have survived (phew!), however the whole output stage is toast.
Even if any transistors have survived, it is better u change all of them as u have wrongly biased.
Gajanan Phadte
Gajanan Phadte
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