Question about Hisense Televison & Video
I'm posting this to help anyone who might run across one of these tv's with 7 blinks then 3 blinks. I replaced the power supply board and the tcon board. Narrowed down it's the main board (Green board with all the wires) Did some digging seems like there is an eeprom that goes bad and causes the issue. You can buy the eeprom off ebay for $15 for some models but for the model i have 50k360g i believe it's eeprom e9. Not sure...going to just but the whole board off ebay and hope for the best. Do some research on google about the eeprom n8 and it gives you symptoms.
Posted on Jun 17, 2016
You haven't given the exact model number to your Hisense TV here. Yet, i posts this solution, as this is a common problems to all TV, irrespective of Brrand and model.
Check its power supply regulator board, for any loose solder points. Resolder all the suspected solder terminals to this board, by applying a little more solder, without making any solder bridge short in between adjecent solder terminals. You have to take the board out from the TV to do this job.
Reset it and see whether it helps you. If not, power retgulator board must be replaced as card basis. OK.
Posted on Feb 15, 2012
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Posted on Jan 02, 2017
SOURCE: tv won't come sometimes with
There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it off and on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for some time and then try again.
If you aren't tech savvy, don't worry, read the rest of this solution and watch the videos.
If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).
Most of the caps that go are 10V 1000uF or 3300uF.
I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.
As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.
Capacitors are less than a buck a piece typically, and can be ordered online from places like www.digikey.com. They charge $8 for shipping, but the parts typically arrive next business day.
Posted on Jul 11, 2011
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