Question about Philips 55PP9401 55" Rear Projection Television

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Philips 55PP9401 55 in Wont turn on no video no OSD

Blinking orange light. PS seems OK some cycling HV noise on Powerup

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Could be bad convergence ic's stk392-120 X 2

Posted on Dec 14, 2008


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Can someone please explain in English why the Philips 170S dispaly monitor's controls are locked and how can I unlock seems my display has stopped working all togother a few days ago. Very...

The first requirement is that you must have video coming from your PC, then you have to press and hold for more than 10 seconds the "MENU (OK)" botton, this must unlock the OSD controls of your monitor.

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Question My monitor shows the message: OSD MAIN CONTROLS LOCKED. What can be the cause of this message? Answer To unlock the OSD Controls press the “MENU(OK)” button for more than 10 seconds while there is video input from PC

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Tv wont turn on

loud noise ? ! just indicate that the main power supply capacitors are bad, or sometimes is just the ceramic filters.
undo the back and check for any blow capacitor or burned components.
the new power board cost 139.99 on ebay

if you dont want to fix your TV, let me know cuz i will buy for parts, write me to

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There's power but it wont turn on? stanby light okay. Blinking intermittenly.

Common short the cover cap over the video & sound boards short out if you remove it the cap only (shield metal) it usually will fix this

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Problem with OSD Main Contorls unlocked/locked

Philips say "To unlock the OSD Controls press the “MENU(OK)” button for more than 10 seconds while there is video input from PC."

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OSD Brightness on screen constantly

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Jan 04, 2009 | Philips 190B6CB/27 19" LCD

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50 " Phillips Plasma tv. Screen is black, blinking red light.

Sounds more like blown/exploding capacitors on the PSB-Power Supply board. No OSD-on screen display a blinking led or chatter/relay clikcing at startup is the tv going into fault protection and bypassing the startup pins. The YSUS-Main controls the pic which is attached to 2 buffer boards the YBU-upper YBL-Lower. They control the upper and lower portion of the OSD and the YSUS controls both of them. Since you're getting No OSD you need to check for blown caps on the PSB first. Unplugging the set resets the error again. So you start all over again.

Best Rgards and Semper Fi

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well then if the orange light does not turn on then you have not connected something the right way or thers something not plug in the right way ok

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1 Answer

Tv wont turn on -- stand by light just keeps blinking

This is very common problem for sony. Blinking light is power supply problem need to replace two voltage reulators in supply and caps and sometime horz output.

Sometimes if you adjust screen voltage adustment on flyback just slightly it will fix it.

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