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Re: My Akai TV not powering up(CTVCT29FS)
Most likely your convergence board is bad. If you have any electronic repair experience, you should be able to locate the convergence driver board. There will be two large black IC's mounted to a metal plate and they will start with the letters STK. Disconnect this board and if the set starts up, it is bad. There should be a number on the board. This will be a Samsung Number. Go to Samsungparts.com and enter the part number into the right box and see if it is still available. If it is not, you could always go to ptscorp.com, get their telephone number and call them about rebuilding your board. Good Luck!
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This issue is related to a power problem in as much as the TV turns off on it's own.
The problem is consistent with overheating on the power supply board of the TV.
The power supply board of the TV has few capacitors and IC. If any of these IC's gets short or become weak, it can cause the TV to turn off on it's own.
When current passes from electric outlet to the power supply board of TV. The current also goes to the weak/faulty part, then the current stops or slow and the board overheats and TV shuts off on it's own.
This is a common problem faced by many other users too. To solve this issue, check the power supply board and read it with a meter and continuity tester, in order to detect the faulty part and replace the faulty part on the board which is short due to which power supply board
It's a bit technical job but yes its not at all a costly repair to do or get it done by the technician.
You can buy these part at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.
Theirs a problem in CRT board,the inner part of your TV,at the power supply section.Try to check fuse at power supply section.there are 2 fuse in the board.The AC fuse and the DC fuse check the DC fuse.
This could be due to a blown fuse in the power supply board. You would need to check using a multi-meter if there is voltage coming into the primary side of the power supply, if not check the semi-conductors especially if the fuse is blown. If you do have supply, then check what voltages are on the secondary side & which supply rails are present to feed different areas of the TV. If one of these lines are missing then trace which components feed this line.
If you have an external power supply check it with a voltmeter Is the red stand by light on? yes, but no pictures ,no sounds you will need to be a good techies to fix it. No , open the back and check the fuse close to the connector from the power supply cable. cheeers
the poer supply faulty. Isolate Horizontal output stage from the power supply and connect dummy load (like normal bulb same wattage as TV ) and test. before that pls check all component in power supply and replace and burnt parts spacialy diodes caps and power regulater ic as well
That is the only fuse. Its purpose is not so much to protect the
TV parts but to establish the UL rating by protecting against
overcurrents and fire.
Next thing to check is the B+ voltage (125 to 160Vdc) on the big
electrolytic capacitor near the power entry. No volts here tells
you the problem is before this in the power supply parts. After
here means the high-voltage supply.
Check that and get backl to us.
There are of course internal fuses, but I suggest you better call a technician if you are not an expert, because you can blow the tv trying to rectify power supply problems. If the fuse is blown, there must be a faulty component behind that.