Tv screen is normal, then green then off. Please help
Hi I have a Sylvania Model # 6427TF . When I turn the TV on the picture is normal for a few minutes and then it turns really bright green with no picture. After a short time it will shut off. The sound continues to work and is recieving the station still. Would this be an IC or something like it that I can replace? Or is this the tube? If its an IC or something like this that I can purchase and then replace could anyone tell me an exact location and part # ? Or if someone has a repair manual would it be possible to get a copy? I have a 19 inch sylvania which is around the same year for parts but this is a 27". Would IC's and such possibly be swappable? Thank You's Again And thank you's again for when you helped with the 60" philips (Its still going strong). A.J.
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Better late than never. The problem is that your TV is in the service mode. There are many ways this can happen. But, lets just get down to fixin this! With the original remote and the TV on. If the TV will not shut off, do this. Press the left cursor button on the remote, followed with pressing the right cursor. Power off the TV with remote, or press off button on TV.
Secondly, your TV will power on and off. But you have flashing colors. Do this. With the original remote and TV on. Press the up cursor button, on the remote, followed with pressing the down cursor. Power off TV with remote, or press off power of TV. Thanks for asking me, Matt of Martins TV Repair.
Hi there are a few things that would be wrong with your TV. The most likelly is your T-con board. The T-con board is the part that trasmit your picture from the signal board to the Screen. You would have to open up your TV and look at the part number of your TV in order to find the part. The other Two things are the signal board or the screen itself might be bad. You can get parts for this TV at www.interliquidparts.com
I have the same exact problem...for a few weeks the TV would turn off and the red power light would blink. Then the other day I started having exactly the problem you describe...green screen for a few seconds and then total shutdown.
They've probably changed the screen ratio from 4:3 to 16:9, or vice-versa. You didn't state which model of TV you have so I'm not sure which buttons you have on your remote, but there should be a button on your remote with "SCREEN MODE" or "SIZE" written on it. If you have this button try pressing it slowly but repeatedly until the picture size returns to normal or it says "AUTO".
If you don't have this button or can't get it to work, please post back with your TV model number and I will supply the correct instructions for returning your picture to the correct size.
> I have a 19 inch sylvania which is around the same year for parts but this is a 27". Would IC's and such possibly be swappable? Possibly; I'm not familiar with either of your sets but there are several places ths could happen and in one of them, it would use a fairly large IC with 26 pins.Common older part numbers are: - M51387- LM1205- LM1207 All of these vary somewhat from each other but are all the same pin count and all handle RGB signals.If the two sets both have one of those numbers and are the same, these can be swapped.The latter two differ in their bandwidth; LM1205 - 130 MHz, LM1207 - 85 MHz.The 1205 can replace the 1207 in most circuits. The above would be the 'nicest' problem, others are more difficult to diagnose: - Failed green final drive - this would be on the CRT base board and a transistor that is intermittantly shorted - A capacitor working with that transistor is shorting The two problems above could also be in an area that is using much the same components in both sets.- A short internal to the CRT between the green grid and its cathode. This one can also be intermittant. The cathodes have a coating that can peel away from the metal tube and produce a high resistance short between cathode and green control grid, bleeding off the negative bias of the control grid. This is a tough one to verify as one should have a thorough background in this area of electronics and preferably a bit of test equipment not found in most garages. The more I think about it, the more convinced I am that this probably isn't in the range of DIY enthusiasts. If you can find any TV repair left in your area, I would even recommend that you have this repaired instead of racing out to buy a new flat screen of ANY brand name.Do some research here at Fixya and look for 'flat screen TV problems' or LCD, plasma or projection TV.All of these are crapping out awful early in life and there are millions of unhappy consumers out there who have spent billions of dollars to upgrade for the coming HDTV changeover and their sets are already broke before it happens.Hopefully, you got at least one of the taxpayer funded "coupon eligible" converters. We have ours for our two older sets to use when our pretty big screen TVs take a dump.