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

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MY SONY SDM-HS74P

My screen stays on for a couple of minutes, then goes black. i am thinking it is the backlight inverter but i can't find this part or part# any where. can you help?

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I had the same problem en replaced an black condensator, one of 1000uF, 10V or 16V, so if you replace it with a new one it's working again :)

Posted on Aug 31, 2009

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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.

Posted on Apr 08, 2008

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Monitor screen goes blank after few seconds, turn power off and back on, works for a few seconds and goes blank again. Any suggestions? connections are tight


It can be due to bad poweer supply caused by bad DC filter caps, bad backlights inverter circuits, bad lamps assembly. It will require in-depth trobleshooting.
http://s807.photobucket.com/albums/yy352/budm/SONY/
If you are going to DIY repair, please read below first.

Basic LCD monitor and LCD TV troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV, Monitors, Caps : http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitor kits: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c rating such as PANASONIC FM or FC series.
Parts: www.shopjimmy.com
Parts: http://interliquidparts.com/

Nov 03, 2011 | 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

1 Answer

Sony sdm-hs75p runs for 5 odd minutes then screen goes blank?


h_e_l_l_f_i_, Have you performed the flashlight test after the screen goes "BLANK" ?? No!! You will not find the "flashlight" test listed in the OWNERS manual!! The test is a quick evaluation of the STATE of the units "switch-mode-power-supply". Did you repair the power supply to get online to fixya? The more info you tell me about your LCD monitor the better I can assist you. Is the unit really "BLANK" or is it just "BLACK"?? Can you SEE the WIN-desktop when a bright "flashlight" is held 1" from the screen at different angles? If you can see a faint image being displayed it means the SMPS is in partial shutdown and still powering the VGA to LCD interface board. If unit is both BLACK and BLANK, then SMPS is likely in full shutdown mode! I will assume that when you stated "runs" for 5 minutes, that it would display normal text and graphics as usual and NOT be wearing a pair of NIKE's runners footwear? Yes! From your description it would lead me to think that your SONY has a SMPS/INVERTER problem. You failed to state the age and or approximate TOTAL "ON" hours the unit has. (hrs/day x 350days x Years since DOM). It makes a difference in whether I tell you to trade up to a wide screen or have it repaired(refurbished with new SMPS/INVERTER or just rehab the SMPS on your own. hellfi, surely, after reading this you WILL go to YOUTUBE, (just fyi) and view some of the longer video clips of "LCD monitor disassembly" and typical "LCD monitor repair"!! You WILL be impressed at how much you will learn about how "the black screen of death" is dealt with. If this response helps in any way, please rate it on fixya. 12fixlouie lmistyrel @ aim.com Get back to me if further assistance is required asap!!!

Nov 23, 2009 | Sony SDM-HS75P/S 17" LCD Monitor

1 Answer

Monitor goes blank after a couple of seconds.


The problem can be the backlight inverter board or bad capacitors in the power supply section, I have seen bad soldering of the wires to the lamps are bad also.
http://en.wikipedia.org/wiki/Capacitor_plague

Nov 05, 2009 | Sony SDM-HS74P 17" LCD Monitor

1 Answer

17" Sony Monitor Goes Black and No Light Shows On The Switch


Sounds like your backlight bulbs are wearing out.It is a common problem with Sony LCDs. Difficult to replace then.
Monitor Mike

Jan 03, 2009 | Sony SDM-HS73P 17" LCD Monitor

2 Answers

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


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

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

Jul 07, 2008 | Sony SDM-HS74P/S 17" LCD Monitor

1 Answer

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


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

4 Answers

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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