20 Most Recent Hitachi 55HDX99 55 in. Plasma HDTV - Page 9 Questions & Answers

If there isn't a button on the remote to do it, go to your TV channel guide and go to the high channel numbers. In the UK they are usually in the 700 range of numbers.

Hitachi... | Answered on Jan 16, 2018

Take a flash light and shine it on the tv screen at an angle . if you see any picture then the problem is with the backlight or the power supply for the back light.
if you see nothing then the problem is somewhere else. it can be the T-con board or the lcd panel itself.

Hitachi... | Answered on Jan 14, 2018

i guess you burnt the power already or check the plug and change the fuse in the plug . see what happens

Hitachi... | Answered on Jan 13, 2018

Test LED output voltage, if its missing look at the power board as being bad, also test the PWM voltage and make sure its between 2 and 4 volts, if its not correct the main board may be bad.

Hitachi... | Answered on Jan 06, 2018

Do a hard reset to this TV, and then check. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts.
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

Hitachi... | Answered on Dec 28, 2017

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.
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main digital board.

Hitachi... | Answered on Dec 28, 2017

Base on my experience. It's time for new one.
Fix it or replace parts will end up more then new one.

Good luck


Hitachi... | Answered on Dec 27, 2017

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