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2230: H802 running hot

bibota

bibota

New Member
Noticed transistor H802 being quite hot to the touch, also the voltage at its collector measuring higher than what it presumably should: 51.7V as opposed to 42.5V on the schematic.
Did check it on another 2230 and it is pretty much the same thing: 51.2V at collector and running hot.

I wonder whether this is just a coincidence or indeed a known thing, including typo.
Anyone out there having a unit open and able to cross-check voltage please?
 
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Probably not relevant 8 years later, but what is are a few years more or less in 50 year old gear? :)

If you are still looking for some chross-check voltages, I also have a 2230 with a pretty hot H802. The voltage on the collector is also higher than specified, but less than you measured. If you like, take a look here - I posted my voltages in that thread.

Sebastian
 
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