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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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Sharp TV 32U-S50 tuner HELP !
Hello- The tuner on this TV is not working.. all I get is a blue
screen when I tune channels. OSD is fine as well as both inputs. If I go into auto programming, the TV searches for channels as normal but non is found ! I checked my voltages. 33v and 5v are there. But since I have no manual, I went ahead and replaced the tuner anyway without success. So now I'm thinking I could well be missing more voltages on this tuner (tuner model # ST5UF740). I know there should be 12v on it somewhere but not sure what pin. Any ideas would be appreciated. |
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wrote: Hello- The tuner on this TV is not working.. all I get is a blue screen when I tune channels. OSD is fine as well as both inputs. If I go into auto programming, the TV searches for channels as normal but non is found ! I checked my voltages. 33v and 5v are there. But since I have no manual, I went ahead and replaced the tuner anyway without success. So now I'm thinking I could well be missing more voltages on this tuner (tuner model # ST5UF740). I know there should be 12v on it somewhere but not sure what pin. Any ideas would be appreciated. I must add, customer said the problem started as a color problem: color would disappear then come back. I'm not sure if that has anything to do with this present condition. Thanks |
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