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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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CTC187CJ3 Hourglass shaped image
Model: F32672SB
Chassis: CTC187CJ3 I am trying to repair this 6-7 year old RCA 32" colottrack TV that has a hourglass shaped picture. After reading multiple suggestions in this group to check the main 680uf / 200v cap, I did. I then opened the case and inspecting the board, where I also found that the degauss thermistor RT4201T had become de-soldered. I re-soldered the degauss thermistor and replaced the cap with one from digkey.com (p/n P11731-ND). I turned the TV on, the picture was restored to full size, and then I watched it for a hour or so. It continued to be work as desired for a few power cycles over the coarse of 24 hours. Now the hourglass shape has returned and the degauss filter has split into two pieces. I am not an expert, I did take some electronic classes in college, and would like to fix own TV. Though I doubt it is related (it is my main motivation for getting my TV fixed) the hourglass shaped picture began to happen shortly after I connected my DirectTV DVR. So now I am forced to watch all the great shows Tivo records with a distorted display. Any advice on how to fix the hourglass shape and where to purchase the degauss thermistor from is greatly appreciated. |
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