Comments on: Solved No Power Problem In HP L1706 (PX849A) LCD Monitor

By: Jestine Yong

Jestine Yong — Mon, 21 Dec 2015 10:01:49 +0000

In reply to qhaiser.

Hi Qhaiser,

Possible the problem is the backlight. Try compare with a good one and retest.

Jestine

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By: qhaiser

qhaiser — Sat, 19 Dec 2015 08:09:55 +0000

I have this HP L1706 with a constant flickering screen. I checked the capacitors and they look ok. Sometimes the screen color turn reddish then bluish.. Anyone with a possible solution?

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By: Jestine Yong

Jestine Yong — Wed, 21 Aug 2013 12:41:00 +0000

In reply to Simon.

HI Simon,

Thanks for the link.

Jestine

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By: Simon

Simon — Wed, 21 Aug 2013 07:57:43 +0000

In reply to Dex.

Have the same screen. I had the same problem, the solution is soldering a 47 ohm resistor between pins 5 and 6 of the Novatek IC.
Hope it helps!

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By: Jestine Yong

Jestine Yong — Mon, 20 May 2013 05:12:06 +0000

In reply to Philip.

Hi Philip,

Make sure the cable between the mainboard and lcd panel are secured and intact.

Jestine

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By: Philip

Philip — Sat, 18 May 2013 11:19:49 +0000

Hi,

I have this HP L1706 with a constant flickering screen. This happens when cold and stabilizes after sometime. Sometimes the screen turns bluish or reddish. I checked the capacitors and they look ok. The PSU voltages are ok. kindly assist.

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By: Adabelle

Adabelle — Wed, 30 Jan 2013 15:20:50 +0000

Thank you for the quick response Jestine! I just repaired a monitor as you advised. We will see how it holds up. Thanks again! 🙂

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By: Jestine Yong

Jestine Yong — Wed, 30 Jan 2013 01:34:10 +0000

In reply to Adabelle.

Hi Adabelle,

Check if the big fat filter cap in the primary side have problem or not. Next, you can replace the three 1000uf 10 volt with 1000uf 16 volt cap. Test it out and see how it goes.

Jestine

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By: Adabelle

Adabelle — Tue, 29 Jan 2013 16:51:16 +0000

Hello Jestine,
On the L1706 models I continue to have a problem with blown caps. The three 10v 1000uf that are grouped together at the top of the board always go bad. I replace them using the same low ESR caps that I use for other models, but after a week to a month those same three caps go bad. My boss said that its just something wrong with the board in general and to throw those out. Is there something else on the board that is causing those to expand that can be replaced? Is there something in particular that I should look for? Thank you Jestine.

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By: Jestine Yong

Jestine Yong — Thu, 08 Nov 2012 12:38:27 +0000

In reply to mohd.

Hi Mohd,

May I know what have you checked? Is there voltage at the secondary side or totally zero volt?

Jestine

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