My Toshiba TV Mod. TV32D60 has trouble turning on, must unplug and replug several times. Switch light flashes each time. Is this a switch problem or something more serious? If it is switch, can new switch be purchased and relaced by myself. Set is 14 years old but perfect picture. I'm asking you because you have made intelligrent reply to others.
Hope you can advise me. Thanks
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Re: Toshiba TV Mod. TV32D60
The problem is not likely to be a switch. I believe that your set has what is called a "switch mode" power supply. This requires oscillation to occur. The oscillation is started by a capacitor circuit. If the cap becomes defective, the oscillation may not start and thus the TV won't come on. Unfortunately this is not a set with which I am intimately familiar so I can not tell you what part to replace. This should be a simple repair however. Check around at a few service shops to see if you can have it examined without a large expense. In the meantime, I'll see if I can find a service manual for it.
One other thing you can try (fi you can solder) is to look for poor solder joints on the main board. If some exist, they can change the circuit characteristics enough to cause what you are seeing. Look for and resolder any joints that appear to be grainy or have rings.
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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty.
Flashes of standby light is fault indication. Count it and confirm the number of flashes occurs at one time switch ON. If you wish to get more details about these blinking codes to Toshiba sets, check this link. Pull up older posts there.
4 flashes mean the IC5004 (STV9379)on D-Board went bad and the 15V supply is no longer steady. The IC
is rather easy to find and inexpensive (around $2.50). Your main
problem will be desoldering the old one and soldering the new one. CAUTION! - Heat sink on IC5004 is -15V. Care must be taken not to allow heat sink to touch any other components
This unit shouldb e flashing a repeated count on the standby light. That count will indicate the circuit in which a problem was detected causig the shutdown. Please post that count and we should be able to provide details on the repair.
GO TO MENU, THEN SETUP, SCROLL DOWN TO TIMER AND MAKE SURE IT IS ON 0 (ZERO) MIN. SOUNDS LIKE ITS PROGRAMMED TO GO SLEEPAFTER A CERTAIN TIME. THIS TV ALSO CUTS OFF AUTOMATICALLY IN 15 MIN. IF ITS TUNED TO A VACANT CHANNEL( NO PICTURE).
Led blinking Three times means B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.
Hope this helps.
The same thing happened with my T.V. (although it is an RCA). The first time a repair man charged me $75.00 to fix. The next time we were told to just try unplugging it for a few minutes then plug back in...that worked. T.V. still sometimes does this, unplugging it fixes the problem