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No pictuer, Buzzing sound from tv Panasonic TX-24A1 (sound started for short period now constant)


John Bond

Jan 1, 1970
Hi I have a Panasonic colour TV, Model No. TX-24A1, Series No.
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,
* 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.
* 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
I have only tried basics
* turning brightness, colour, contrast and sound up to try for
* opened TV and hade a smell, couldn't smell any burning or see smoke
That's it any help would be grateful thanks