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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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Samsung M # HC-P5241W Ch # P60A.
Samsung M # HC-P5241W Ch # P60A. My main concern is why the EEPROM
values are at zero! Nothing burnt, nothing bad by the yoke plugs. Looks like the typical bad convergence, but actually has bad pincushion, & picture is too wide, & too high, in every cutomer pix setting. Both STK's were replaced, but it's the same. B+ is 115VDC @ H.O.T., so it looks like bad pin. Here's where it gets odd. As if it has a bad EEPROM, of corrupt EEPROM, or someone was in the service menu tweaking (pretty sure it hasn't been touched). Some "size values" are zero. Eg: V Lin, Upper Lin, Lower Lin, VSC, H Parabola, Upper Corner, Lower Corner, Trapezium, Bow, Angle, & V Position are all zero, & should be about 31 at default. Replaced Pin Amp Loc Q402 KDS 73-Y NTE 54, & IC 401 KA4458. High voltage caps aren't split, bulged, or burnt. I "tweaked" the EEPROM, & it's better, but can't get the whole pix small enough to fit. Has anyone seen this odd problem? Thanks, for reading this long post. Dani. |
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