My 5370a's both run hot as heck. I used some cheap small c-clamps and some old heatsinks to increase the area of the hp heatsinks. You can also run an old fan if you have one. I've found that the whole era of Hp equipment runs too darn hot. 3325a, 8656a, etc. etc. Don
gonzo . > > Hi all, > I just picked up an irresistibly cheap 5370A (so cheap I didn't ask if it > worked). > So far it checks out ok, but I have some questions for those of you more > familiar with this model. > > 1) The back panel heatsink (4x TO3) is sitting on 76°C (168°F). > - is this normal? > > 2) Several resistors and diodes on the A6 Power Supply Controller show > sign of excessive heat (specifically: CR1, R1 & R23). > All the A6 voltage rails are within 0.2V. > - Is this a normal sign of age or should I be looking for something that's > NQR? > > Judging by the stickers, it's probably spent it's entire life with the > side panels on the wrong sides.This may help explain the overheated > components. > > cheers, > ian > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- "Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind." R. Bacon "If you don't know what it is, don't poke it." Ghost in the Shell Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.