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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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No pictuer, Buzzing sound from tv Panasonic TX-24A1 (sound started for short period now constant)
*********model*******
Hi I have a Panasonic colour TV, Model No. TX-24A1, Series No. LC-0460063. I'll start by saying I have no experience fixing TV's but I am an experienced computer engineer so I don't mind getting in side and having a play. This TV is quite old perhaps Ten years, ************History******************** * Five years ago something inside it broke (im not sure what I didn't own it then), they believed this to be a tube of some sort. It cost thirty English pounds to fix if that helps * The TV has generally worked fine up until I have had it, however on sporadic ovation (1 every 6 months or so) when the TV was switched on all the colour, contrast, brightness and sound values would be reset to 0 * I later learnt that the above problem could generally (I can't remember this not working) be rectified by switching the TV off and back on again. *******problem*************** * Finally I woke up this morning switched on the TV and there was no picture, but the TV made a short, 5 second broken doorbell (med frequency) buzz. * I switched the TV on and off a couple of times and the buzz changed to a slightly higher frequency and remand constant * All of this reveals no picture or sound from speakers ******tried****** I have only tried basics * turning brightness, colour, contrast and sound up to try for response * opened TV and hade a smell, couldn't smell any burning or see smoke That's it any help would be grateful thanks |
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