Question about Televison & Video
Used to be intermittent but now full time red blinking light and black screen.
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.
Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location.
Posted on Nov 13, 2014
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Posted on Jan 02, 2017
The old saying that a pictures is worth a thousand words could have been looking at this one... If the lower screen had been streaked in B&W or bands ran completely through the picture Old Drummer I would suspect the logic board also but that's lower y-board failure.
Posted on Nov 15, 2007
If you see bad capicators, just replace the ones that appear to be bad. There are many different types of capicators on the power supply and there are different part number for each one. The good thing about capicators is they almost always list the ratings on the capacitor itself.
Check the Voltage rating (V) and the Farad ratings (F, usually μF), you can replace them with any one that has the same ratings. Make sure BOTH of them match the old ratings, you can purchase at just about any electronics store that carries electrical components such as RadioShack.
Posted on Oct 09, 2009
SOURCE: Heard a popping sound unit
10 blinks on this set is not a power supply fault but rather an A-board fault(Main A/V board). Hence replacing power supply would not do the trick. I suggest you return the board and get an A-board for +50$ and I am confident that it will resolve your problem.
Posted on Feb 04, 2011
First of all you should weight the cost benefit of repairing the set versus purchasing a new one.
Depending on the size and model of tv, it may be more prudent to simply cut your losses and buy a new tv rather than spend money swapping out circuit boards in the hopes of repairing a set in questionable condition already. Main / Power Supply / LCD Controller boards will typically run you about $100 each to replace, so weight that against the purchase price of a new tv that comes with a warranty.
Given that, if you are still intent on trying to repair the tv, and it does since you have gone out and acquired a service manual, there are steps you can take.
First of all the service manual should give you some idea what the blink pattern means on the front panel lights. Look that up first.
It does sound power supply board related, but bad capacitors are not always as obvious as the tell-tale bulging or gunk-leaking ones.
Use the manual to find out what voltages you should be getting out of which wires coming off the power supply board. In general, some will be 5VDC, some will be 12VDC, and some will be 24VDC. Test them with a multimeter and see if you are missing any.
Obviously this test requires you to have the unit plugged in and powered up with the safety covers removed. I cannot stress enough the potential dangers involved and if you are not confident with that level of maintenance, I would recommend you leave the live power tests to the trained technicians.
You said you didn't see any bad capacitors, so you may want to just unclip, pull out and then reseat all the multi-wire connector you can get to in case one of them just has a bad connection.
Good luck in the troubleshooting.
If you have any questions or require any further assistance please comment back on this page and I will do my best help you. Please provide the model number of your tv next time as well.
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Thank you very much.
Posted on Feb 15, 2011
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