Hitachi L32HP01 No menu in DTV

[is_it_a_bird]

Hi

Just donea repair on this set (17pw20v2) I replaced it with a 15-9 I know that is working and shows all correct voltages

Everything works apart from when you select DTV the screen is blank and the only buttons that work on the remote are volume and stereo, turn it back onto analogue tv and I can get into the service menu

I did a factory reset and now the menu headers have gone all odd and funny colours

Any ideas folkes

[tom66]

Re: Hitachi L32HP01 No menu in DTV

The DTV board requires a 12V supply is that connected?
Have you made sure the LVDS from the DTV is connected?
Check the voltage regulators on the DTV board.

Note, on these Vestels, the DTV board handles all of the input except those two keys (plus the power I think.) So you do not get any response from those as the DTV board is not processing them.

[is_it_a_bird]

Re: Hitachi L32HP01 No menu in DTV

The DTV board requires a 12V supply is that connected?
Have you made sure the LVDS from the DTV is connected?
Check the voltage regulators on the DTV board.

Note, on these Vestels, the DTV board handles all of the input except those two keys (plus the power I think.) So you do not get any response from those as the DTV board is not processing them.

Cheers Tom, the digital board had a slightly bulged cap on it so replaced that and checked voltages.

11.11v getting to the board but the VR's are showing diddly squat, the board in question is 16mb1300-1, just had a look on flebay and they are going for £4-£5 so for that money I may aswell take the risk, it takes away the hours of pain chasing a fault on these Turkish Delights


Thanks again will let you know if the new board repairs it

[is_it_a_bird]

Re: Hitachi L32HP01 No menu in DTV

Hi Again

Just done a couple more checks on the tv and dont think it is the digital board, I have uploaded pics of problem, personally think its a corruption problem but not sure, any ideas?

The first pic is with the tv in hdmi connected, I do have audio

[tom66]

Re: Hitachi L32HP01 No menu in DTV

Check LCD panel sticker - CHIMEI, Samsung, CHUNGWHA etc. Change LVDS setting to match in service menu.
11.1V is too low for 12V too!

[is_it_a_bird]

Re: Hitachi L32HP01 No menu in DTV

Check LCD panel sticker - CHIMEI, Samsung, CHUNGWHA etc. Change LVDS setting to match in service menu.

Cheers Tom changed it to the correct panel but no luck, changed the lvds mode to off and the main menu has come back but still only a third of the screen showing very distorted

[is_it_a_bird]

Re: Hitachi L32HP01 No menu in DTV

11.1V is too low for 12V too!

Sorry just seen your edit, would 0.9v make the screen screw over like this?? and is this why the VR's on the digital board are struggling

[is_it_a_bird]

Re: Hitachi L32HP01 No menu in DTV

Will answer my own question just put another working board in running with bang on 12v and everything booted up picture perfect dtv has returned

Thank you Tom, I would of been chasing my tail for hours on this one

[tom66]

Re: Hitachi L32HP01 No menu in DTV

If 11.1V is too low, you probably also have low 5V and 3.3V.

[is_it_a_bird]

Re: Hitachi L32HP01 No menu in DTV

To be honest Tom 3.3v and 5v were spot on, but you know already how awful and odd some of these bloody faults are on this range of pw's I hate them with a passion, just glad it is all sorted else I would of thrown every other board at it and been no better off :o)

But thank you so much again