20 Most Recent Sony SDM-HS74P/S 17" LCD Monitor Questions & Answers

It can likely be repaired, but will probably cost more to repair it, than replace it, since even 24" LCD monitors cost around $125.

Very doubtful. Either you have a defective or corrupt display driver, or possibly a malware infection. Is that a laptop or notebook computer? If so, is there a VGA port for an external monitor? If do, try using a known good external monitor.

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

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

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/

It can be bad caps in the power supply, bad backlights inverter circuits, bad lamps (black screen).
You will have to open it up and troubleshoot it.
If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SONY and other monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/ Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and 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 http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: 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, high ripple current, long life rating such as PANASONIC FM or FC series.

Please try the steps mentioned the link below and check if it works:

http://www.kb.sony.com/selfservice/documentLink.do?externalId=C262552

The 1000uf/16vdc caps are for the 5vdc logic, there should be at least tow caps rated at 25vdc for the 15vdc inverter circuits. Try using 1157 12v car lamp attache to the 15vdc, the power switch will have to be off (the 5vdc and 15vdc are always on) so the inverter circuits will not be drawing the current from the 15vdc power supply, the 15vdc should be at 15vdc +/-1~2v with the lamp load. If it is steady, then you still have problem in the inverter circuits which can be the lamp assemblies, inverter transformers, Transistors/IC. I use test lamps set up to narrow down the problem to find out if it ia the lamps or the inverter circuits.
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

Service manual: http://elektrotanya.com/?q=showresult&megnev=Sony%20&megnev2=SDM-HS74P&kategoria=&kat2=all

blue screen error is not there because of monitor's driver
there are others reasons like
1. smps supply may be faulty you may swap it with some other
2. recently software is faulty
3. mother board is faulty

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.

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.

you can replace another cable,open cable connection

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.

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.