Question about Sony SDM-HS73P 17" LCD Monitor

2 Answers

Black screen flashes after initial power up

Push the on/off button and you can see the normal screen and goes black again. There was a electrical burning smell at the time when the problem first started.

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 13 Answers

This happened to me, and I fixed it, so read on! Switch on... green LED for a couple of seconds, Brief flash of light with display working, the total shutdown. Switch off, repeat but press the front panel power button as soon as the green LED comes on and it goes into standby (red LED) and stays there. This proved to be a weak power supply problem, fixed by replacing dried-up electrolytic capacitors (very common problem on any elderly
TFT monitor). Hopefully it's the same for you, but if you have a different problem, like no sign of life at all, some of this may still prove useful to you.

Getting into the case is tricky. Remove the stand (4 scerws) and all seven other visible screws on the rear. Using a "spudger" (plastic blade for prizing cases apart) or similar object (or a knife if you don't mind causing cosmetic damage to the case)prize the bezel from the back cover. It's got lots of snap-fit latches every 3 inches or so so it's a pain. I used several thin metal plates in the gap as I went to stop it snapping shut again. Be careful around the front panel button area because you could damage the wires, though they are not as delicate as the flat film cables found in Dell monitors! With the bezel separated the plastic back panel is still firmly held on by the four annoying plastic tabs along each of the two sides. I overcame these by wedging metal plates next to them to prize the sides sufficiently apart from the metal internals to pass the tabs, then laid the monitor face down standing off them so the internals and bezel could drop downwards out of the case back. That's the hard bit over!
The metal back cover can now be removed (7 silver screws - not the two below the video connectors. Disconnect all the wires form the power supply board with care. The one to the main board un-clips from the main board and not form the PSU board. Don't just pull it. The wire to the power switch comes out easily if the PSU board is lifted a bit first (3 yellowish screws). The backlight cables top and bottom are held on with white gunk - just pull them off without straining the wires unduly.
The main clear plastic cover can be peeled off the board for access to the components. In my case I found nothing obviously wrong - the fuse was good, and no sign of any burning, so I began to systematically remove each electrolytic capacitor in turn and test it with the capacitance setting on my multimeter. All of the solitary ones were fine, reading within a few% of the value on the can so put them back (the right way round!!!!). However, three of the ones in the bank of six (470uF,35V) were reading significantly higher than the other three, 490-510uF, so I replaced them with new. Put the clear plastic safety cover back on, using double-sided tape on the bits where the clue had dried out. DON'T POWER UP WITHOUT IT! Fit back onto the monitor and reconnect everything with care not to bend any pins in the board-mounted connectors. Refit the three yellowy screws.
With the monitor screen side up it's safe to plug in the power lead and turn it on. First time I did it, the thing still didn't work! I disconnected power and checked all the connectors again. One of the backlight connectors wasn't quite straight and it turned out I'd bent a pin. Straightened it, reconnected, BINGO!

If you started with a completely dead monitor it's likely the fuse is blown and possibly some other stuff as well. The best approach for a PSU non-expert (like me) is to get hold of a working one and just look for differences between the two side by side on the bench with a meter (Not powered up of course!) I don't know this particular supply but look out for burnt resistor R019 (hidden in heatshrink but should be 0.39 ohms), also look for short circuits across FETs, replace any obviously charred items and check the rectifier and diodes with the diode check function of the meter. Good luck, and ALWAYS be safe around electricity!

Chris Colborne 13/2/15

Posted on Feb 13, 2015

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Possibly the backlights have failed. The screen part may be working normally. Get a bright light close to the front of the screen, see correct image faintly. Commonly it is failure of the high voltage inverter circuits that power the backlight fluorescent lamps. You can probably buy replacement circuit or repair the one you have. I have done this on another model. You need to search the web for experience of the same model. RDL.

Posted on Jan 17, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a lg cineplus model RF-20CA30K. Sometimes tv screen goes black and then flash like on/off, then i push to him with my hand and screen goes normal. What is the solution


I have a lg cineplus model RF-20CA30K. Sometimes tv screen goes black and then flash like on/off, then i push to him with my hand and screen goes normal. What is the solution

Aug 15, 2010 | Televison & Video

1 Answer

Black screen


• 1) TAKE OUT YOUR LAPTOP BATTERY
• 2) REMOVE YOUR AC ADAPTOR CORD, that's the wall power, remove it.
• 3) NOW HOLD DOWN THE POWER BUTTON FOR 30 SECONDS.

That will drain any static electricity that has built up on your laptop system board and many times fixes the problem of a black screen. After the 30 seconds re-connect your laptop to the wall power and hit the power button normally and see if the laptop comes back up.

Replace your battery.
Restart!

Mar 02, 2010 | Dell UltraSharp 2407WFP 24" LCD Monitor

1 Answer

Tv does not stay on, screen goes black


Checked all connection given properly checked your cable connection some time cable connection not proper than also its display no signal

Jan 23, 2010 | Westinghouse SK-32H240S Television

1 Answer

My Acer Aspire One shows black screen only.


Acer Aspire One BIOS Recovery The AA1 has a built-in BIOS recovery routine, making it possible to flash the BIOS even if the system doesn't boot anymore. It's only meant for emergencies and may void your warranty, so use at your own risk.

Follow every step carefully!

First format an USB stick with FAT.

Download the latest BIOS, and put both FLASHIT.EXE and the BIOS file in the root directory of the stick. Rename the BIOS file to ZG5IA32.FD, that's important. Do not remove the USB stick.

Turn the AA1 off, make sure both battery and AC adapter are connected. Press Fn+Esc, keep it pressed and press the power button to turn the AA1 on. Release Fn+Esc after a few seconds, the power button will be blinking. Press the power button once. The AA1 will now initiate the BIOS flash, do not interrupt it under any circumstances. After a while the power button will stop blinking, and the AA1 will reboot shortly after. Wait patiently.

The BIOS has been flashed and all settings reset to default.

If for some reason you made a mistake during the procedure and it doesn't reboot by itself wait 5 minutes before turning it off, just to be safe that it isn't still flashing the BIOS.

Download WIN98BOOT.ZIP and HPUSBFORMATTER from the internet normal bootable like a diskette won't work with a usb stick
I had mine 2 months it's a common problem with the notebook.
The onely thing that you have to do is download these programs with someone with a internet connection.

Good luck

May 08, 2009 | Acer Aspire One Netbook 8.9" Notebook

1 Answer

Monitor flashes on then goes black.


I think you have the display shut off. the button on the bottom left will shut screen off. It will come on for a few seconds if you touch the screen, but will shut off again. just push the display button again and it should stay on.

Apr 02, 2009 | ViewSonic OptiQuest Monitor

1 Answer

Plasma tv screen goes black once you turn it on. Only sound


I have a panasonic TH-42PX60U plasma TV. When I watch TV programing I have no problems, or with the DVD input. But if I switch to another input, be it video game (PS2) or vcr the screen sometimes goes black and the red power lcd light next to the power switch flashes. Holding the power button in for a few seconds will shut down the tv. Then I can turn it back on and it may operate normally again for a undetermined period of time, before the screen goes black again. This never happened when new. The tv is about 1 year old. Any ideas on this problem? Thanks Ernie

Aug 13, 2008 | Televison & Video

1 Answer

Does a bad power supply look like this?


i suggest that you buy a new monitor coz your current monitor is too old...there's some electric component is weaken...its better to buy new than to repair the old one..

Mar 08, 2007 | Mag Innovision LT776s 17" LCD Monitor

Not finding what you are looking for?

Open Questions:

Sony SDM-HS73P 17" LCD Monitor Logo

270 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18381 Answers

Computer Links

Level 3 Expert

2385 Answers

Are you a Sony Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...