Hey y'all,
I've just pulled the CRT board from my TDS784D in order to see whether a re-capping will fix the CRT jitter and shearing I'm seeing from time to time. The disassembly was uneventful, though as this is the first time I've messed with a CRT, the anode lead made me very nervous indeed.
Now that I have the board out, I ran my DER EE DE-5000 LCR meter through the caps on the board, and nothing much is sticking out as problematic so far. There are on the order of 35 electrolytic caps of various sizes from 1uF to 2200uF and voltage ratings from 10V to 2560V between CRT driver board and what I assume is the LCD driver riser board, plus one on the CRT neck board.
I figure any caps measuring high in ESR, or low capacity should get replaced as a matter of course, and perhaps caps that live near heatsinks as well.
Beyond that, would you guys normally replace the lot of them, or is there more method to such madness?
Siggi
