Hi i have a problem with a channel. I found only a R on emettitor burned Only R (i Think autooscillation), manual service tell me replace with a fail safe (1 ohm 2w). I have replace it with a metalized flameproof, make low voltage test, and all ok, so i have assembled and i’ll read perfect bias (40mv) for 20 minutes then dropped to 1,5mV and I find all the resistors that measure even 1.8/2.5 ohm (1 ohm) and some interrupted and now There Is only one final transistor burned.
Everything is perfect. In attachment there is PA 7 but is same project
What is the problem? Metallized R is Not ok??
Thank you
Everything is perfect. In attachment there is PA 7 but is same project
What is the problem? Metallized R is Not ok??
Thank you
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Nothing to do. I change R with wirewound and one final transistor. power on and no error, relay close and start, but if i search to set 3,9V on TP3, R of check burn and smoke... i just check every diode transistor R Cap and it’s all right.
Is possible that final transistors also if good to be “burn”?
Can you help me?
Is possible that final transistors also if good to be “burn”?
Can you help me?
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