Question about Sanyo DS31590 31" TV

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Tv won't turn on

Picture got dark and was flashing in back ground,turned off then wouldn't turn back on

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  • 5 Answers

Have you checked all of the cords? something might be unplugged.

Posted on Jan 22, 2009

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ic circuit is the problem, see TV Tech.

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Jvc 27'' TV is too dark


There are two small holes on the rear side through which you can adjust focus and screen. Use a flash light and locate the two adjustable slots inside the holes. This part carries high voltage. Do not use a metal screwdriver to adjust. Put the TV facing a mirror so you can see how it works. Do not turn more than 1/8th of a turn. The focus control makes picture sharp or fuzzy. Screen control could change brightness. While watching the picture in the mirror, slightly adjust the screen control. Do not turn too much. If it doesn't work, then call a JVC authorized repair center.

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Watching tv when the picture went black and now the green on light flashes for 30 times and turns off


A green flashing light for this model of TV indicates that the lamp cover is open on the TV.
  1. Unplug the power cable to the TV.
  2. Remove the 2 retaining screws on the lamp cover with a Phillips type screwdriver.
  3. Remove the lamp door completely from the TV.
  4. Remove the two retaining screws on the lamp case.
  5. Lift up the fixed wire handle of the lamp.
  6. Pull out the handle slowly and remove the lamp case.
  7. Insert the new lamp gently into the correct position. Make sure it is inserted correctly.
  8. Using a manual Phillips screwdriver (Do Not use an electric screwdiver), tighten the screws you removed in
    step 3.
  9. Replace the lamp cover and tighten the cover screws.
  10. Plug in the power cord and turn on the TV. After the initial warmup period (which may take up to several
    seconds for full picture brightness), the TV should operate normally.
If any of the following conditions exist, turn off the TV, unplug the power cord, and repeat steps 1–9 to ensure that the lamp unit and lamp unit
door are installed correctly:
  • The lamp indicator flashes green.
  • No picture
  • Dark picture
  • TV will not turn on
If, after repeating steps 1–10, the problem still exists, call Customer Service at 1-800-631-3811.
Source

Aug 31, 2009 | Toshiba 44NHM84 44" TV

1 Answer

TV Picture Pops In and Out Toshiba Color TV CZ27V51


mine was doing the same thing. If i put pressure on the cable input from left or right it would fix this.

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2 Answers

Dark picture


Your problem could be the secondary anode cable or CRT socket, and you cannot fix this problem yourself unless you are a techie. It happens when your CRT base socket burns out, or when the pins are rusted or when the spark gap conducts to drain out the secondary anode voltage to the ground. It is better you call a service engineer.

Dec 15, 2007 | JVC AV-27230 27" TV

1 Answer

Picture goes dark


1 your problem is in video section 2 if it is ok then check power supply for any components defective.

Sep 15, 2007 | Sony FD Trinitron WEGA KV-32HS500 32" TV

1 Answer

Dark screen/picture.


This 30" flat screen TV set may have a problem in the high voltage circuit of the TV set. You may be able to adjust this by taking off the back of the TV set. Look for the block where the large red wire runs up to the top of the picture tube. On this block will be two controls. one will say screen and one will say focus. Try and slowly turn the control that says screen or S on it clockwise and see if you can make the picture brighter. Turn up the control till you just start to see faint lines in the picture, then back the control down till the lines go away. If the picture does not come up when you turn this up, and all you get is a blank screen, you will need to have this set repaired by a qualified repair person. Good Luck

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1 Answer

The TV turns on and you can hear the sound but the picture is dark except for a thin line of blue dots in the center of the screen.


You have whats known in the biz as a cold solder connection on the vertical output IC or on the associated components. Not a job for the handi-man unless you know the issues with safty, and precautions to take with Hi voltage inside of tv sets. Shouldnrt cost much for the local shop to find your problem . Now on rare occations the poor connections are inside the IC and the IC has to be replaced. Good Luck

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