Actually I have a Sanyo AVM-3689G TV that went completely dead a few weeks ago. TV won't do anything, just a plain black screen. There is a faint high pitched sound coming from the TV, but that's it. Any ideas out there?
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Re: no picture,no sound,blank
This set is very popular for the capacitors to dry upa and go bad in the main SMPS as well as the switching power supply. If you have no know how on how to test capacitors or solid state electronics please take the set into a repair shop for an estimate
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I had a problem like that so I disabled the tv's onboard tuner (input source)and now we use the cablebox's video and audio out to the video and video in jacks on the TV this will work as long as you have a cable box or sat reciever for your video and audio source and of course your TV must have video and audio inputs so it will work.
sound like a tuner problem. there is a resistor that goes to the tuner that could of went bad 39,000 ohms i think which should have a orange white orang strips around it and a gold. anyway there is a problem with tuner. Sanyo was good about haveing a problem with tuners in there smaller sets. If you do not know anything about how to repair you probly shoud take to a shop but the total cost might be high and not worth it in the long run. think before you jump still water runs deep.
if TV have black screen,increase screen control to see vert amp IC is defective if you see one horizontal line in picture tube screen,and if screen is white with lots of line acrose ,you can find open resister,on picture tube board,or in main board near HV transformer.
Not unless you have a magic wand!!!lolol This happens alot when a service man goes out to the house as they are told not to do many repairs in the home cause theres no money in it . If the set is over 3 to 5 years old it might not be such a stupid idea of looking into another set. Good Luck