t0nito
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Oct 25, 2013, 8:03 PM
Post #1 of 76
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My old grundig is semi-dead
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Hi, I have an old grundig I replaced a tripler a few years years ago with Ron's help and it worked fine until now. I turned it on one day and about 5 minutes later it made a screeching noise with a few faint lines on the screen for 2 or 3 seconds, made a loud bang and turned off (as in standby). I turned it on with the remote and it made a loud bang and it went to standby again. When I took the cover of to inspect where the noise was coming from I turned it on and (of course) to make things difficult it woudn't do the noise again. Now when I turn it on, the LED display (no OSD) shows as if it were on (AV, 1, 2, 3 etc) but it won't actually turn on. I have a working flyback that I replaced because it made a loud 15 kHz squeal, but I know it's working so I swapped it but it's still dead. I tested the HOT with a multimeter for continuity (in circuit though) and there is no continuity between the 3 pins. Visually inspecting nothing seems burned or charred. Chassis is a CUC3400 schematic is here: http://www.eserviceinfo.com/download.php?fileid=247 I know it's a really old set but it has RGB input and had a really nice shapness and colour. It's a nice TV for retro gaming. Thank you
(This post was edited by t0nito on Oct 25, 2013, 8:06 PM)
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