Question about Sony Bravia KDL-40V4100 40 in. LCD HDTV
After taking the back panel off to inspect the T-con board and its wires due to Picture Solarization - I notice the wires were loose so I began to correct the issue. While doing so the screen went black and I am unable to view anything on the tv at the moment. The menu does not display nor are they any icons or pictures when powered on. There are no blinking red lights when the power is on. When using the menu button I notice that the screen lights up a little but not much like its in menu mode. I can only assume this might be some bad wires or TCON board but not sure. Please help would love to fix the issue myself instead of buying a new TV. I did not test the sound at this point because I am not able to see where i am on the tv to turn my apple tv on.
Fault at its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Posted on Dec 11, 2015
Testimonial: "Fixed for $105 and a technician, short chip on the main board, also chip on tcon board was bad, replaced and tv is running like new."
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Posted on Jan 02, 2017
U might get the tv working again,by unpluging it,replug an hour later let the tv reset it self.Not,Than the Tuner board,it the board u should looking into replacing.Not the power supply board is good,because u getting a solid power LED indicator light.
Posted on Apr 26, 2010
It's not to complicated, in the newer TVs as well as other things, when you first turn them on the diagnostic circuits kick in [that the first relay you hear click] it sends a signal (low voltage) to all the circuits to check them and make sure there are no problems. If it gets the proper returns from each circuit it kicks out and the full power relay kicks in and powers your set up. This is done to protect others circuits that might be effected by a flaw in a different circuit. What started as a small flaw in a component has gotten worse with use which is normal. Your set is kicking the diagnostic circuits and they are detecting the problem and shutting it down. You have problems with your power board, if the diagnostics circuits were not in place and full power hit the set the power board could possibly put triple or more voltage to some section of another board, thus burning it out also. That's why they started using the diagnostic circuits on TVs, Computers have had them for years. Late model car - etc. I would take the power board out of it and go to shop Jimmy's and enter the part # which will be on the board and order me another one and pop it in and kick back and watch TV again. I don't know what a power board would cost for it but "shopjimmy's" carries high quality boards at a reasonable price. I do caution you on buying a refurbished board, they are tempting but I have never and I mean never seen one hold up very long. As a matter of fact I will not put one into a TV or anything else for that matter. So there is light at the end of the tunnel and it's not the train this time! I only work on the kind of TV that plug into the wall or run on batteries, therefore, I've seen a bunch of them in14 years. Don't worry about getting the wires mixed up because one thing about TVs is a harness or plug will only fit one place and that is where it belogs you can't cross them up.
Posted on Oct 23, 2012
SOURCE: Tv powers on, but shows a black screen. There is no audio as well. When the problem occurred, the blinking lights meant that there was a power surge of some kind. If I remember correctly that's what
Here is the customer support contact.
Posted on Sep 21, 2014
Testimonial: "yea, no thanks... I already talked to Sony. They were not helpful. At all."
SOURCE: Tcon issue?
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.
Posted on Jun 02, 2015
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