Please Help Fix My TV - Toshiba 36" Model No. CF36G55
Toshiba 36" TV Model No. CF36G55, purchased in 1997 from Good Guys: This television currently has no picture and the power button on the right hand side has a red light that is flashing. I checked the manual and the only bit of info I could decipher from the manual is that this red light is the power source indictor or the remote indicator. No troubleshooting tips in the manual! Hopefully, you can help. (I tried shutting the entire system down, including TV and dish box, and powering up again, but now the red light is not flashing - the TV appears to be off and cannot be turned on).
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One of the most common problem with current TV's is heat. Since they tend to get hot, one of the things that goes out a ton is the fuse or power supply. Depending on the TV and the Manufacturer this can be an easy fix, sometimes you don't even have to solder if it's the power board. I bet if your TV does nothing that's the case. Check around online by your make/model and you'll get a pretty good idea of how easy it is to fix.
I found a Parts purchase list online, but you'd have to know the part number for the ones that are broken.
Something is preventing the power supply from operating:
Possible causes in order of likelihood:
1) Convergence amps failed overloading the supply (See if you can disconnect them)
2) High Voltage circuit has died. (Right on schedule since your TV is 10 years old)
3) One of the CRTs has shorted
4) The power supply itself has died (Is there a lot of dust covering it?)
See if you can isolate the failure by working down the list.
Hope Ya Fix it!
sound like when moving tv u knock optical block out of focus to fix problem open up light engine assuming u know a little about electronics reajust lense with mirror in frot of tv u in back adjust untill perfect /// if u have old school projection tv suonds like u have a convergence problem open tv ther should be 2 large black squares on edege or board these r ics they should have letters stk on them replace go 2 nte semiconducter.com purchase 18$ 2 =36 bucks 4 repair good luck i hope i saved u a few bucks not diffulcult takes time
Is this a "new" set or just new to you? If new, don't waste any time on this. Return the set for an exchange. If new to you, then the problem is in the convergence circuit and if you can solder, you should be able to fix this yourself. Let me know if you wish to attempt the repair and I'll supply additional details and instructions.
If you have cable or satelite/direct TV etc, no converter is needed. If you use an external antenna to receive over-air broadcasts, please post the model number and I'll let you know. The changeover in February only effects over-air broadcasting.
Need to test F470 and F850 for open.. Simple continuity to see if either fuse is open.. If F 470 is open replace it and C884 and if F850 is open you probably you may need to replace the two convergence amps STK392-110... Large black Ic's screwed on an aluminum heat sink...
bad solder connections in the deflection and power suply ckts solder and then solder some more then look for leaky caps on the pc board and dicoloration ie turned black on the solder pads of those caps