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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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Apex tv, bottom screen black, top blue. deflection problem?
checked all caps on main chassis, doesnt seem to be the problem. any ideas
on where to go? supercricket doesnt seem to like to check the xsistors on the board, is it worth desoldering them just to check them or may the cricket be bad? diodes all check good. no cold solders, have whacked and flexed on board pretty good. hard to get ahold of schematic for such a new tv and its just sitting in the shop undiagnosed. any help would be appreciated. wolf at the video doctor |
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Apex tv, bottom screen black, top blue. deflection problem?
Did you use an ESR meter to check the caps? A standard cap meter will not
indicate for high ESR which is critical in these circuits. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "wolfhedd" wrote in message link.net... checked all caps on main chassis, doesnt seem to be the problem. any ideas on where to go? supercricket doesnt seem to like to check the xsistors on the board, is it worth desoldering them just to check them or may the cricket be bad? diodes all check good. no cold solders, have whacked and flexed on board pretty good. hard to get ahold of schematic for such a new tv and its just sitting in the shop undiagnosed. any help would be appreciated. wolf at the video doctor |
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#3
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Apex tv, bottom screen black, top blue. deflection problem?
"wolfhedd" wrote in message hlink.net...
checked all caps on main chassis, doesnt seem to be the problem. any ideas on where to go? supercricket doesnt seem to like to check the xsistors on the board, is it worth desoldering them just to check them or may the cricket be bad? diodes all check good. no cold solders, have whacked and flexed on board pretty good. hard to get ahold of schematic for such a new tv and its just sitting in the shop undiagnosed. any help would be appreciated. wolf at the video doctor See if your set is listed he http://www.worldwideelec.com/apex_asc_site/apex.html They have PDFs of a bunch of Apex TV service manuals. Mike WB2MEP |
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Apex tv, bottom screen black, top blue. deflection problem?
Yes, definetely, thanks, all electrolytics. is there anyway to check the
ceramics other than pulling them or looking for bulges? wolf Wolfdogg's site http://www.home.earthlink.net/~wolfdoggsite "Jerry G." wrote in message ... Did you use an ESR meter to check the caps? A standard cap meter will not indicate for high ESR which is critical in these circuits. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "wolfhedd" wrote in message link.net... checked all caps on main chassis, doesnt seem to be the problem. any ideas on where to go? supercricket doesnt seem to like to check the xsistors on the board, is it worth desoldering them just to check them or may the cricket be bad? diodes all check good. no cold solders, have whacked and flexed on board pretty good. hard to get ahold of schematic for such a new tv and its just sitting in the shop undiagnosed. any help would be appreciated. wolf at the video doctor |
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#5
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Apex tv, bottom screen black, top blue. deflection problem?
of course i could scope them, but i guess what i was asking, is there an in
curcuit tester for ceramics? wolf "wolfh" wrote in message hlink.net... Yes, definetely, thanks, all electrolytics. is there anyway to check the ceramics other than pulling them or looking for bulges? wolf Wolfdogg's site http://www.home.earthlink.net/~wolfdoggsite "Jerry G." wrote in message ... Did you use an ESR meter to check the caps? A standard cap meter will not indicate for high ESR which is critical in these circuits. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "wolfhedd" wrote in message link.net... checked all caps on main chassis, doesnt seem to be the problem. any ideas on where to go? supercricket doesnt seem to like to check the xsistors on the board, is it worth desoldering them just to check them or may the cricket be bad? diodes all check good. no cold solders, have whacked and flexed on board pretty good. hard to get ahold of schematic for such a new tv and its just sitting in the shop undiagnosed. any help would be appreciated. wolf at the video doctor |
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