Question about Sony SDM-HS74P/S 17" LCD Monitor

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Sony SDM HS74P Screen Stays on for approx 15 seconds then shuts off but power light is still on?

I recently acquired a Sony SDM-HS74P Flat Screen monitor but I am stumped. The screen comes on and is brilliantly displayed for 2 to 15 seconds (depending on how long it is on) but then shuts off, leaving the power light still on? I have looked for parts but do not know where to go? Is there something I can do without having to hunt down impossible to find parts?

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  • Anonymous Aug 15, 2008

    HI, SEEMS LIKE POWER ISSUE, U NEED TO REPLACE THE THE POWER BOARD ON THE UNIT, THE POWER BOARD MODEL FOR YOUR SYSTEM IS PWI17LS285A, ACTUALLY THE CAPACITORS DOES NOT KEEP ENOUGH CHARGE TO KEEP THE LCD WORK... HOPE YOU FIND IT HELPFULL

  • goofygeef Oct 01, 2008

    I had mine replaced under warranty TWICE by Sony for this problem. The original new unit went 2 years.The second unit (the rebuilt replacement they sent) lasted 6 months. So far, after 18 months, the third (also rebuilt) unit is holding up.

  • patrick7550 Mar 27, 2009

    I have a VAIO with a SDM-HS74P screen. When powered on the screen comes on for 2 seconds and then goes off.

  • Anonymous Apr 06, 2009

    yea.. exactly the same problem, except, when it turns off, an "out of range" error message...

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PWI17LS285A, ACTUALLY THE CAPACITORS DOES NOT KEEP ENOUGH CHARGE TO KEEP THE LCD WORK...

so the big capicitor needs to replaced? 100µF 450V

Posted on May 17, 2009

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Your problem is the capacitors please verify all your capacitors and the "big" one what have 450V

Posted on Nov 25, 2014

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you have a bad power supply. remove rear cover look for crowned or leaking capacitors. reomve bad ones by desolding. take to electronics arts store and get new ones. resolder and good to go.

Dec 24, 2009 | Sony SDM-HS74P/S 17" LCD Monitor

1 Answer

My Sony SDM-HS74P display does not stay on.


I have the same issue and wrote the monitor off for now after checking all cables (and a different computer). The logic circuitry and panel are sill ok as I can see a faint image with proper lighting and close inspection, but no backlight makes it useless.

Since there are 4 lamps (CCFLs) on this model, the problem likely is not there but on the inverter circuitry driving them. This does not look easy to replace as this is part of a bigger board.

It looks like some could repair by changing a few (or even one) component on the board, but unless your are used to this (de-soldering and soldering back), you are kind of stuck.

I will attempt this if I have time as I hate junking 99.9% ok hardware. In your case since this is an old monitor you should just replace it if not technically (on the electronics side) apt.

Dec 13, 2009 | Sony SDM-HS74P/S 17" LCD Monitor

2 Answers

MY SONY SDM-HS74P


You open the inverter unit and check any dry soldering is there. Some times dry joints inside the inverter unit cause this type of problems.

Apr 06, 2008 | Sony SDM-HS74P/S 17" LCD Monitor

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This is a duplicate post, click the following link to read the active posting: http://www.fixya.com/support/t138012-sony_sdm_hs74p_s_17_monitor_stay_right

Mar 16, 2007 | Sony SDM-HS74P/S 17" LCD Monitor

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Sony SDM-HS74P/S 17 - Monitor won't stay on the right picture


When the screen turns black again take a flashlight and shine it in the bottom left hand corner where the Windows Start button is located. If you can see a faint image then your back light is failing. If that?s not the case the next step would be to attach another monitor to your computer to see if the problem disappears. If it does that points to the monitor, if it doesn?t then we need to take a look at the computer itself. Let us know what you find out and please don?t forget to rate this posting.

Mar 16, 2007 | Sony SDM-HS74P/S 17" LCD Monitor

1 Answer

My monitor says "input ......" and then the screen flashes off.


This is a duplicate post, click the following link to read the active posting: http://www.fixya.com/support/t138012-sony_sdm_hs74p_s_17_monitor_stay_right

Mar 16, 2007 | Sony SDM-HS74P/S 17" LCD Monitor

1 Answer

Sony SDM-HS74P 17" Monitor goes black after turning on


Most likely you inverterboard went bad on the monitor.

Nov 04, 2006 | Sony SDM-HS74P 17" LCD Monitor

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