The red on/off button is loose and has trouble engaging the button on the small PCB.
Looks like there is a part missing, but there is no sign of it. Is it a spring which has taken off into the blue? Something is needed to spring back the red button so that it is firm and align it with the button on the PCB.
Please can anyone help me find whatever I need to make the red button useable? New, 2nd hand, picture of parts breakdown or anything to reveal the unknown.
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Re: Matsui LM20N2 on-off button
Your manufacturer will be able to provide the missing piece. Either it could be a spring or some rubber component. Your user manual should provide a number to call them at. Otherwise I will find one and post it here. Let me know if you need anything else.
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Dry soldering of pcb.
missing 200v to neck board.
if you have soldering iron and you can resolder all the joints and give a try.check the flyback transformer area specially.and neck board power ic.
These trouble is commonly caused by a rusty or dirty switch. It is easily to determine what switch, try to check the power switch or replace a new one. When replacing a switch open the back cover of your tv, try to locate the power switch by looking for the power button, It is connected in a small pcb together with the volume and channel button it is separated to the main pcb connected with a wire.
its not that, it just cuts out when the sound gets quiet, the matsui thinks the small amount of sound is 'interference' so blocks it out, however if a film gets quiet it blocks it out, which is ridiculously stupid, i have no idea how to sort it out either