Question about Philips Magnavox 51MP392H Rear Projection Television

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Hello again!!!! model# is FP5251 G105

Can you tell me where the vertical output ic is located !!! thanks

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There should be three circuit boards on that model a small board on the right then a larger board in the middle and another large board on the left the vertical IC will be located on the middle board it will be attached to a aluminum heat sink.

Posted on Jun 01, 2008


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Vertical deflection that would be fixed by banging the TV. Now banging doesn't fix it. Is this a solder problem? Can I resolder and if so, what would I be looking for? Thanks, Steve

There is some loose solder terminals at the vertical output section ot your TV. Just open the TV, locate the vertical output section. There is an IC in the vertical output section, usually screwed on to a metal heatsink to radiate heat away from it while it works. The solder terminals to this IC should be noted for any loose solder points. It is a common fault to most of the CRT based TVs, regardless of brand and model.
Look at the solder terminals of this IC for any loose solderings. This loose may happen, because, this IC will heatup while working, and repeted heating and cooling may make solder points to the terminals of this IC, will cause the fault you reports here.
It will be very difficult to detect these loose solder points, as some of them may be so microscopic to detect. So do what we do on service table. Just resolder most of the suspected solder terminals of that vertical section, including all solder terminals of the vertical output IC and related parts, by applying a little more solder, without making any solder bridge short in between adjecent solder terminals. This mut solve the proble of your tV.
Please adjust with my language, as I'm not an English. My mother toungue is entirely differet to that of English. I only try to exchange my ideas and experience to you. OK.

Sep 15, 2011 | Toshiba 32A50 32" TV

1 Answer

I have a Sony Trinitron Model KV-27V40 and I can't turn the TV on. the stand by/timer light keeps flashing 4 times . I've unplugged it and tried again. HELP!

Four blinks of standby light with Sony Trinitron TVs are related with its vertical scanning fault. It may be due to the fault to the vertical output IC, of it does not get the proper volatage to work on. To proceed with; you must have a sound knoledge in electronics, and about the working of a picture tube based TV. If you have, just open the set, locate the vertical output section. At firs, look for any loose soldering to that section, especially to the solder terminals of vertical output IC. It is quite normal case for loose sodering to the termiminals of this IC; as it will heatup to an extent while working. Repeted heating and cooling, will make the solder terminals to get expand and contract; thus loose solder points occurs. Just resolder most of the vertical output section by applying a little more solder, whthout making any solder bridge in between close adjecent solder terminals. If this does not hel you, check the input voltage to that IC. If there is no voltage, find out the reason; resistor open; track break etc:- If there is volatege and still the problem occurs, output IC is damaged and should be replace with and identical one both in number and size. OK

Aug 25, 2011 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Thin horizontal line across screen

You haven't specifed nothing about the model number or brand name of your flat panel teleivison. i assumes that it to be a picture tube based one and posts this solution before you.
A thin horizontal line across the screen with sound output is OK, is the sympton of total failure of vertical sweep. This may be due to failure of vertical output IC or loose solder terminals of that IC. The vertical output IC will heat up while working, and repeated heating and cooling may make its solder terminals to get loose. Just open your TV, pull out the board that contains vertcial output section, turn it upside down, resolder all the solder terminals of that IC by applying a little more solder, without making any solder bridge in between terminals. Check the voltage to the vertical output IC also. If this resoldering method does not help you, replace the vertical IC itself with same type and number will solve your TVs problem. OK.

May 07, 2011 | Televison & Video

1 Answer

The picture is only comming in as a small band across the tv

The vertical scan output section of your Symphonic is faulty. This type of fault may occur either by the defect of output IC or its terminal soldering loose contacts or capacitor problems. Just open your TV, and locate the vertical output section, and the IC used there. It will be a small IC usually screwed onto a metal heatsink, to radiate heat out from it. Resoder all the terminal solderings of that IC, by applying a little more solder, without making any solder bridge short in between its terminals and see the effect. If it does not helps, replace the capacitors used in that section. Replace them all with same type. There will be 5 or 6 of them. If this also doesn't helps you, replace the Vertical Output IC, with same type and number. Ok.

Apr 08, 2011 | Symphonic ST420FF 20" TV

1 Answer

Only a horizontal line can I see in my TV

In most cases the vertical output IC and possibly a fusible resistor off of the high voltage transformer are bad. The vertical output IC is located on a heat sink and usually right next to the vertical yoke winding connectors that are green and yellow in most sets. Please take a moment to rate my answer..Thanks...

Nov 24, 2009 | Sharp 27G-S60 TV

1 Answer

Emerson EWF2702 TV Problem

Hello yyimerr1,

This is a vertical deflection problem, These are the possible causes:

1) bad vertical coupling capacitor
2) bad vertical output IC
3) bad vertical driver IC
4) bad CRT deflection yoke

Troubleshooting needed:
1) using the TVs schematic locate the driver IC the output IC and the CRT yoke transformer.
2) using an oscilloscope look at the vertical driver signal it should be a sawtooth signal from the driver to the yoke (increasing in amplitude for each section, i. e. driver and output).
3) if no sawtooth patter is seen that is your problem, look for the component in the section where signal is entering but nothing is coming out.
4) replace the components

Now let me tell you something, don't continue to play the TV with the line present with brightness applied, this will burn the image of the line into the phosphorous coating of the CRT.

I hope this helps

Thank you,


Nov 01, 2008 | Emerson EWF2704 TV

1 Answer

Hello its me again!!!! model# is FP5251 G105

from the back is the best way to get to it.

Jun 01, 2008 | Philips Magnavox 27MS343S 27" TV

1 Answer

Hello thanks the model # is FP5251 G105

Thats the PTV711 chassis phillips magnavox. I would suspect the vertical output IC needs to be resolderd. Its located on a aluminum heatsink and should have vertical stamped on the board near where the IC is located. Often when the vertical drops out it causes the CRTs not to light as a safety feature to protect the tubes. let me know if you need more assistance.

Jun 01, 2008 | Televison & Video

1 Answer

Hello, I own a 2003 phillips 46" rear projection HDTV model no. 46PP9302 & serial no.78201545. I went to change the channel and the picture just went out but there is still audio. Could it be the...

try resoldering the vertical output IC thats most likely the problem if not the vertical output IC may need replacing. If you can solder you may be able to do this yourself as its not a hard repair the replace the output IC

Apr 18, 2008 | Televison & Video

1 Answer

Orion TV model TV_798 sl (thin line no picture)

problem is with the vertical output circuit. take it to a repair shop and have them fix it.

Sep 15, 2007 | JVC AV-27D302 27" TV

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