Products > Test Equipment
Tektronix 2235 repair thread
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bd139:
Have tested them all and they are good on both ESR and capacitance.
wasyoungonce:
I have a 2236 and its a little whiny as well
bd139:
Thanks for the reply. I'm probably just going to leave it TBH. If anything goes wrong I'll fix it. I don't fancy a fight after that original 2235 that started this thread :)
paronaram:
Hello Everybody, Just joined this forum. I am learning electronics, reading here there, watching videos.. Trying to fix faulty audio equipment; troubleshooting. I start purchasing some test equipment for this task and that included Tek 2235 oscilloscope.
Scope was cheap because it it has ONLY one problem (as per guy who sold me). It was listed no horizontal sweep on left side. I was hopping maybe something with PS, but no.. And after troubleshooting more I find out that I have no Ch1 as well ...  :'( 
Can someone help me where is this problems maybe coming from?
I checked all voltages on TP they are fine, was trying to do reverse by adding signal on the Ch1 and see where it gets lost, but fist stage U10 is buried under 3 PCBs, I don't even know how to check TP there ...

bd139:
If it’s not sweeping on the left side only check the horizontal wires attached to the tube. Sometimes these fall off. Might be as simple as that. If not it’s going to require a lot more effort to find.
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