Thomson 21"tv, with TX91 chassi, having picture

Please recheck your contacts at the back or front of your TV. Power off your TV, then pull the cables fully out the jack and back in.

I have an old Thomson TV 21FDR more than 10 years old. Recently the Tv screen has a lot of disturbances with the screen full of hirizontal lines and a hissing sound. A well trained technican had replaced the tuner with a new one . But after some 2-3 days the same problem is with the tv. Kindly help me with suggestions.

if crt pic tube magnitized need to degausse with coil

i think thomson has disame chassis with tcl tv.

check the yoke magnets alignment

first, check the vertical section maybe they had a lose connection specially the ic, second check the supply of the heater

were you able to get the problem solved Even I have the same problem

Zaburi,
It's probably micro or tac switch related but that chassis has to be one of the worst pieces ever built... Good news is you can buy a new one for very little cost and some wholesalers were selling the complete chassis for under $75.00 dollars.

reset the memory of your tv,or the EEPROM.to reset it just simply unplug the unit,then press together the menu and the vol+ buttons,then press the power switch,when its on,release together the from pressing menu and vol+

1)Whenever the word "sometimes" is used,a good visual inspection of PS,horiz,regulation & vert. circuits are needed.Solder any/all bad connects. 2)IHVT aka flyback is the usual culprit. Get part # and ask distributor how popular it is? Any info gathered when doing repairwork can be helpful.!