Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
bd139:
I like soldering in electrolytic caps. It's therapeutic.
Something that is NOT therapeutic however is some garages burning down round the corner from me. Been smoked out all afternoon and all the roads are closed. This has slowed my HP power supply delivery down considerably as indicated by stalking my DPD driver all day! :--
med6753:
--- Quote from: bd139 on June 15, 2018, 03:00:48 pm ---I like soldering in electrolytic caps. It's therapeutic.
--- End quote ---
Agreed, but re-capping the 2465 PSU is very extensive and time consuming. So I would prefer a big stretch of uninterrupted time to do it. The week of July 8 - 14 I have to take a mandatory unpaid furlough from work. That's perfect. It will be hot and humid outside and I hate the heat. So it will give me an excuse to stay inside in the A/C. :-+
Specmaster:
Just keep your fingers crossed that road closures and smoke don't prevent DPD from making the delivery to you.
I like soldering in caps as well, very calming activity, but seeing as 3390 is only 10 years at best I think it warrants a re-cap just yet, would have thought its got at least another 10 years to go before its required given how little usage its had and will be getting in its future.
bd139:
I'd leave the 3390. That's still in good territory.
The 6237 turned up and as expected it's in good condition but misbehaving. The +20V and +18V outputs are rammed at max rail voltage and the -20V is zero. Based on more than one supply being rammed, it'll be somewhere round the reference circuitry I reckon.
Quite surprisingly the date code on this is VERY late. It's actually circa 1991 looking at date codes which was right near EOL for these supplies before they were replaced with the E36xx series.
Will follow the excellent service manual and resolve this.
This is why I like these. Check out the engineering:
bd139:
Found it already. 7.5V reference zener is kaputt, hosed, nuked, zonked.
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