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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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41" Sony tv model:KP-41EXR96 chassis:SCC-F23C-A
41" Sony projection tv
model:KP-41EXR96,chassis:SCC-F23C-A,chassis:AP,year:Oct 1993,turns on for 1 second then constant standby blinking LED until I press the power button again.I disconnected D2 connector (8 pin located near both STK4278L's) on the D board (convergence board located behind front speaker grills) and the tv came on with sound but only 3 lines going from left to right (red,green & blue).Also disconnecting D-5 connector allows tv to stay on with audio. I noticed some other repair shop had resoldered both convergence IC's: IC1704 & IC1705=STK4278L=NTE7140 (which replaces STK4278) but both old original 3 amp fuses are still fine.I noticed that two of the pins of one of the STK4278L's were touching each other so I seperated them and still tv shuts down with D2 connector plugged in. So I replaced IC1704 & IC1705 with exact generics and still not staying on.I don't usually repair projection tv's and never do service calls but this unit is light and the customer dropped it off at my apartment.I am on slow dial up internet so cannot download or view the service manuals which are usually in PDF: https://www.vancebaldwin.com/shop/re.../KP41EXR96.pdf -AP so if someone could download the schematic of the convergence board ONLY dealing with D2 connector area I would really appreciate it and email it to me at the below address. Does anyone have any common repair tips for me too?. Sidney E-mail:sidneybek(at)yahoo.com Dartmouth,Nova scotia Canada |
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