Products > Test Equipment
TEKHIND 2235 (Tektronix India)
abhi1981:
Hello,
Just got a :-BROKE DEAD (Tekhind) Tektronix 2235 scope.
Nothing happens when I plug it in. The power led doesn't light up.
No visible damage other than some burnt rosin.
Where do I start?? :-// Please help.
Fuse is OK.
abhi1981:
Cap C902 is blown. Most probably this is the culprit.
Per Hansson:
--- Quote from: abhi1981 on July 06, 2023, 07:08:52 pm ---Cap C902 is blown. Most probably this is the culprit.
--- End quote ---
That's just for line filtering, it will not have any effect, just make sure there is continuity through that board and it will be fine if you remove those two Rifa caps for now.
I would be allot more worried about the state of the main PCB, it looks like it was stored improperly and something leaked and corroded it?
abhi1981:
Thanks for your help Hansson. I'll remove the caps for the time being. Should they be replaced with exactly the same type of film cap or other material cap can be used ? Replacement options are limited in India.
Not much damage under the high voltage cover. But there is a lot of corrosion around U555. The traces have become discolored. I pretty sure someone has done resoldering with low quality flux paste, hence the burnt flux everywhere. I'll resolder all the corroded points.
Dave Wise:
You should join the "tekscopes" mailing list at groups.io, all the experts are there.
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