Products > Test Equipment
TEKHIND 2235 (Tektronix India)
abhi1981:
--- Quote from: TERRA Operative on July 08, 2023, 05:38:19 pm ---Someone may have used acid-flux to do a repair?
The corrosion damage looks pretty extensive, I'd be inclined to scratch the solder mask back wherever it's damaged and give it a really good clean to get any of whatever damaged it washed away. A fiberglass brush can help polish the traces clean too.
Then repair the traces by tinning with solder and/or soldering bare tinned copper wire along the traces if any are open circuit. Use lots of rosin flux to help the solder flow properly.
Seal it up again with conformal coating when you are finished and hopefully it will be ok..
If you leave it, the corrosion will probably just continue to get worse..
--- End quote ---
Totally agree with you. "Technicians" here still use paste flux, which leaves a burnt residue and they don't care to clean it >:(
I'll clean the corrosion damage, but first it needs to power on properly.
floobydust:
Spreadsheet list of 2235 capacitors to replace when doing a recap: https://www.eevblog.com/forum/repair/tektronix-an-usm-4882235-high-8-6-v-ripple/msg2539461/#msg2539461
At this age, I replace all electrolytics in the PSU to prevent drama.
tunk:
Ian Scott Johnston recently looked at a 2215 where he replaced 3-4 of
the Rifa caps. Your scope looks similar, maybe it has more of those caps.
https://youtu.be/MW_p8HzVAlY
abhi1981:
Can the Rifas be replaced with ceramic caps?
abhi1981:
Or these
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version