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Model 70 Closeup picture of EC's and Speaker plug
#2

Unpowered - measure the possible shorts at the rectifier tube output, that is across the 1st electrolyic.
Take the tubes out, power just the transformer, check all voltages, see so nothing heats up or smokes.
Check the electrolytics.
Check the connections in the rectifier/filter agains the sch.
Check all tubes.
Power up with just the rectifier tube, measure the B+ voltage, keep it awhile (your electrolytics should be rated apprppriately for about 500V), see that nothing gets hot.
Be carefull - the charge will linger. You might discharge it with a 10K resistor held with some insulating tool.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.


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RE: Model 70 Closeup picture of EC's and Speaker plug - by morzh - 11-19-2020, 05:00 PM



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