EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: bklein on December 30, 2017, 04:59:00 am
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I bought a 2440 off Craigslist for $50 on a whim and got it home and saw the white phosphor cloud in center screen when I turned it on. Took the case off to get ready to repair it and turned it on and the cloud changed to the display screen text and a trace eventually appeared. Now, several months later, I tried it again and got the cloud but it heated up and got the screen text and then finally the trace image appeared and everything works.
1. Is this a sign of bad caps? I can pull and test them all if so.
2. I read that there is a memory chip inside that has built in battery backup that will eventually die. Worth keeping this around if this is going to die eventually?
3. My scope has a missing Intensity knob (knob support base underneath is good), the power switch's clear cover has broken off. I guess I can make something like it and glue it in but wondering if someone has a spare. My scope is also missing the control panel cover (cap). Interested in buying if really cheap. I normally use a digital scope but may like to use this one for XY modulation visuals etc.
Barry
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Regarding the old Tek parts there is a small online shop - QService, who stocks a lot of bits and bobs for Tek, HP etc. I used it recently and got stock in very good condition.