Question about Hitachi UltraVision CineForm 55VG825 55" HDTV

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Tv screen has a short has sound no picture - Hitachi UltraVision CineForm 55VG825 55" HDTV

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  • Hitachi Master
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If its DLP your Lamp is Bad.

Posted on Dec 12, 2009

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Posted on Jan 02, 2017

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We have an older Phillips Magnavox tv. The tv will turn on & we will see the picture for a short time but then the screen turns grey. We still have sound, just no picture. Also, the green power light...


Hello, the grey screen could be due to a missing 220Volt source which feeds the color (RBG cathodes)inside the CRT(picture tube). When this happens the beam current inside the CRT goes high in a matter of second, thus triggering the beam current protection circuit(blinking green light)shutting down the TV. Repairing the secondary voltage source is necessary to get the TV working normal, a good technician should be able to repair it for between 80 to 100 dollars parts included, except a picture tube, which could be also the cause of the problem(K-A shorts).

Nov 06, 2010 | Philips Magnavox 27MS343S 27" TV

1 Answer

My magnavox tv is making a buzzing sound, no picture, and wont change channels (just a dark screen)


Something has shorted in the set causing the power supply to make that buzzing sound. Most likely the short is in the horizontal circuit. The horizontal makes the high voltage work which in turn lights the picture tube.

Oct 15, 2009 | Televison & Video

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TV screen went all black no picture only when you turn it on a sound is making


A short has developed inside the set. What you hear is the power supply being overloaded due to the short. Have a repair shop check it out. Thanks

Oct 14, 2009 | Insignia NS-27 TV TV

1 Answer

Philips HD tv has no picture


common fault this , normally the fuse has failed on y-main board due to shorted thick film unit

unfortunately its not a cheep repair job.

Aug 18, 2009 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

Green picture


a green screen on power up with retrace lines. At shut down a point appears in the middle of the screen. Sounds like either a shorted G2 grid, or bad flyback. If a phospher flake has shorted the grid in the tube, you can sometimes have luck by using a megger set at 1000VDC, to burn away the short. This is usually caused by the line HV going too high causing the anti-UV protection to kick in so fit a dummy load 40W lamp instead to the line output to allow measurements to be made.

Oct 19, 2008 | RCA 20F512T 20" TV

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No picture or sound


Shorted hori output and bad FBT flyback transfomer.

Jul 13, 2008 | Sanyo DS31590 31" TV

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Hitachi 57G500a no picture but has sound


Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
No picture
Replace IC (TDA8385J)
Sound but no picture
Check the LOT cable for short circuit

Nov 24, 2007 | Hitachi 57G500 57" TV

1 Answer

Sylvania 27 inch stereo flat screen tv


This problem sounds like a short inside the picture tube itself unless a driver transistor failed that drives the red gun in the CRT. You may have to take it to an authorized repair facility if the picture tube is still in warranty.

Nov 10, 2007 | Sylvania 6427FF TV

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