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Old 18th Feb 2023, 10:46 pm   #109
cathoderay57
Nonode
 
Join Date: Oct 2017
Location: Bristol, UK.
Posts: 2,382
Default Re: What did I get myself into? Murphy A40C.

Something is amiss. R52 should be dropping 95 volts so at 15k it ought to be dissipating 0.6 Watts. If a 2 Watt resistor is getting excessively hot then something is wrong. The most likely cause is if C71 is leaky. It could be a duff AC/VP2 but less likely. Check the voltages either side of R52 and work out how much current is passing through it. Are you sure that's a 15k resistor? Neither of them look like it.... Jerry
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