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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Panasonic 21" monitor C2192P
This machine has NO heater voltage,
I tried to follow it but without a diagram it is a bit hard since all the boards are multilayers. Would anyone out there have experience this problem before and have the source of that Heater voltage. Thank you for your help |
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Panasonic 21" monitor C2192P
"Aslaner" wrote in message ... This machine has NO heater voltage, I tried to follow it but without a diagram it is a bit hard since all the boards are multilayers. Would anyone out there have experience this problem before and have the source of that Heater voltage. Thank you for your help Look for bad soldering or bulging capacitors in the power supply. If you can't track it down, you can always wind 2 or 3 turns of wire around the flyback core and use that to power the heater just so long as nothing else is wrong. |
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Panasonic 21" monitor C2192P (update)
I think that I found my problem. I have to finish it off. It was not easy since this monitor has circuit board with runs on both side which was the source of the problem. I traced the difficulties the heater voltage from the board at the back of the Picture tube to the mainboard and it was going a bit everywhere with a circuit run on the component side of the board. I finally lost the trace behind capacitor C867, upon removal of that capacitor, I noticed that the run was open and because the capacitor had leeked and evantually corroded the run for the heater voltage and quite possibly shorted to one side of the capacitor lead . If you see one of these sets with "No heater" voltage the chances are that the culprit will be that. "Aslaner" wrote in message ... This machine has NO heater voltage, I tried to follow it but without a diagram it is a bit hard since all the boards are multilayers. Would anyone out there have experience this problem before and have the source of that Heater voltage. Thank you for your help |
#4
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Panasonic 21" monitor C2192P (problem solved)
Sure enough problem solved. It was indeed the heater voltage cct run behind
capacitor C867 that was causing the problem. All that because the capacitor had leaked. "Aslaner" wrote in message ... This machine has NO heater voltage, I tried to follow it but without a diagram it is a bit hard since all the boards are multilayers. Would anyone out there have experience this problem before and have the source of that Heater voltage. Thank you for your help |
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