Dell D1025HE Power Supply Prob. Schematic, Clues...?
I've got a Dell D1025HE 17 inch mnitor which was switched on whilst the
mains 230V power supply suffered a bunch of short interruptions/returns. After several of these short power cuts a wisp of smoke came out the back of the monitor and that was it.. Now Dead. The 6.3Amp internal fuse blows immediately on power on. I cant see any obviously damaged components, and I'm not seeing a short accross anything obvious. Does anyone have a schematic of the monitor, or even the power supply section, or any one got any ideas? It's a nice unit with a Sony tube and I really dont want to give up on it :-( Thanks, IainM |
Dell D1025HE Power Supply Prob. Schematic, Clues...?
"Iain" wrote in message ... The 6.3Amp internal fuse blows immediately on power on. I cant see any obviously damaged components, and I'm not seeing a short accross anything obvious. Does anyone have a schematic of the monitor, or even the power supply section, or any one got any ideas? I've done a bit more digging, and the problem appears to be linked to PTC 2, which seems to be linked to the degauss circuit. NTC 1 seems to drive PTC 1 & 2 which feed the degauss coils. Desoldering these components, fuse stopped blowing. NTC 1 measures 5 ohms, PTC 1 measures 21 ohms, PTC 2 leg came off when component was wiggled, think it was already weakened. and hopefully the source of my blowing fuse. Monitor is working at moment with PTC 2 removed, but would really like to see the circuit and know exactly whatr I've done here... also need to find a component to replace it I assume.. or do I?? |
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