Question about Sanyo AVM-3659S 36" TV

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No picture,no sound,blank

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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  • dave bujnak Jul 28, 2006

    Is it worth taking the unit in? What kind of cost are associated with capacitors and power supply boards?

  • dave bujnak Aug 02, 2006


    I followed your advice and had a TV tech come and look at my tv. Two youngsters showed up, pulled off the back cover, checked the fuse on the power supply and checked to see if it was good,(and it was)said all the capacitors looked ok (not checking any). They said that probably the main power supply board is bad which cost several hundred dollars to have repaired. Any advice? Could they have checked anything else out before diagnosing the main power supply board? Seemed to me that they were both unsure about this model tv, even admitting they had never worked on this tv before.

  • Anonymous Dec 13, 2008

    i was watching my t.v it cut off and wouldn't turn backon.I noticed a slight high pitched whistle. tried turning my surge protector off and back on ;to no prevail, some one please helpIcan't afford another television now

  • dcolley13 Jan 18, 2009

    sanyo 27" tv suddenly went blank, and has no sound. any idea what the problem could be. tv is about 3 years ols.



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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

Posted on Jul 28, 2006


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