I have a device which died the other day, it's been dry stored for years, powered up OK, then died on soak test after three hours with part of the front panel LED's and other stuff not working. I am now getting 5.9 volts on the 7 V + line with an accurate DMM. I tested the diodes circled in green in circuit and some showed bad (conductive both ways the top two), and one on another rail seemed bad, but forget that for now. Am I right in thinking this circuit should allow on board testing? I intend to replace the IN4001 's with similar or higher rated, and change all the electrolytics, but was wondering if I am right in thinking this circuit would allow accurate on board testing of the rectifiers circled? Cheers.
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