Question about Philips Magnavox 27MS343S 27" TV

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Model fp5251 g104 green screen

We found online that the tubes needs filled or cleaned but we don't know how to locate them and remove them to service.

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Re: model fp5251 g104 green screen - Philips Magnavox 27MS343S 27" TV Standard (CRT) Televisions


Posted on Dec 09, 2007

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Sir I've got problem with my sharp 20" standard rca tv model 20v-J300XB. I need to have a service mode procedure to balance its G-drive for it has strong green screen..but if its still not through the...

Have you checked all the cathode voltages (Rg, Bg & Gg)? If not check it. If the Gg voltage is found much less than the other two cathode voltages, the fault might be to the green video output transistor, or its collector load resistor. In service mode too, there are adjustments. All of it cannot be stated here. anyway, check the above stated voltages first. CRT cathodes are negative biased, that is, if the voltage at the cathode become low, the intensity of color to that cathode too. If you wish to get more details, come over by comment. To get more details,

Nov 16, 2013 | Standard (CRT) Televisions

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Unsuccessful autofocus followed by E15R code--red curves out at corners

this is a problem of the crrt tube inside your tv..... there wil be major problem this tube,..... only because of this, the pictures r noyt clear....

dwnld the user manual frm here and change the crt tube

Jun 07, 2008 | Sony KP61XBR200 TV

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Screen went green on sony tv

Check the video output section circuit for any loose soldering or component failure. Check the voltage at the green cathode of the picture tube. Can be measured by using a multimeter. At present, this voltage will be lower than other tow cathode voltages. In most cases, the cause for this fault is found to be with loose solder terminals itself.
Check all the solder terminals at the video output stage printed circuit board. You can locate this board at the picture tube base itself. Will be plugged to the back of the picture tube neck. A rectangular board. Normally, it will be very difficult to detect loose solder points, as they might be microscopically small to detect by ***** eye. So it is recommended to re solder all the suspected solder terminals there, by applying little more fresh solder, without making any solder bridge short in between adjacent solder terminals. This must solve the problem you faces with your TV

Jul 23, 2012 | Sony FD Trinitron WEGA KV-34HS510 34" TV

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Can i fix my tv screen is red

Toshiba 36A10 36" TV is the model you have indicated---

If the screen is all red and or too bright (no green or blue can be seen) the problem is in one of two places: Either a shorted picture tube or the board that plugs onto the end of the tube.

That board sends red,green, and blue video and information to the picture tube via 3 pins on the tube (the K or cathode for each).

The set will have either 3 IC's on that board or 3 transistors, or a single larger IC for this.

to troubleshoot this:

I would locate the Red Cathode and unsolder that pin at the socket on that board--takes red out---if you have green and blue picture then---it is either the IC/transistor that feeds that on the board or the tube itself.

If it has 3 chips (usually will each have a metal plate attached for cooling) you can either remove and replace the red one OR what I do is swap it with the green or blue chip---if suddenly you now have a blue or green only screen you know that part is bad--simple as that.

If for any reason the picture tube turns out to be bad--you are finished and so is the set= way too expensive to replace it.

Let me know if you have questions or need advice.

Mar 28, 2012 | Toshiba 36A10 36" TV

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Hitachi C21 model.The colours on screen have got scrambled.

It sounds like something has left a strong magnetic field on the face of the picture tube, and that's causing the colour distortion. The electron beams from the tube's colour guns are hitting the wrong spots on the face. There is a degaussing circuit in the TV that tries to neutralise such fields every time the set turns on. Sometimes electrical equipment (particularly motorised appliances like a vacuum sweeper) operating too close to the TV can leave a field too strong for the degaussing circuit to cope with. Or a failed part in the circuit may have made it inoperative.

A hand-held degaussing coil can be used to remove the field. You can purchase one online, or call a TV service technician. It used to be a standard tool to carry.

Another possibility is that the tube has been damaged. There is a very thin metal mesh screen called the shadow mask behind the face of the tube. If this mask has been warped by a strong magnetic field or a mechanical shock (if the set was dropped, for instance), you will see the same colour distortion. In this case, however, there is no repair other than tube replacement. And that is likely to cost more than a new set with parts and labour.

Jul 26, 2010 | Hitachi C21-F200 21" TV

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Red, green and blue colours diveded on my TV

ok well "tube" tellys as they are called use an electro magnet to keep the picture stable and colours correct its called gaussing now if you have a speaker or something magnetic nearby it will stuff up the colors but only normally producing colors like purple,green, or white
if you have colors across the screen (that aren't caused by magnetic force) then you need to take it to a repairer or decide wether or not to buy a new one this issue can turn out to be quite hard to fix and can be expensive the different colored electron guns may be burning or burnt out causing pale color or it could be as simple as a power transistor in the H.V supply has shorted out..and causing power issues to the tube.
hope this helps,ben

Aug 13, 2009 | RCA 20F512T 20" TV

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Zenith Model SY2551S 1996 27" - Green Tint

The core problem with the green tint is the aging of the picture tube, and can be compensated a bit by using either the green drive control usually located on a printed circuit board on the neck of the picture tube or on the main chassis. There will be 3 main controls which will adjust the red and blue as well. If these controls are not present then you will need to get into the service menu and adjust it from there. Don't adjust anything else as you can make the set much worse. Also remember that in order to make these internal adjustments while watching a black and white picture (turn the color all the way down) you will have your hands and arms near live circuits that could shock you and cause injury to yourself as well as break parts inside the set when you pull back after being zapped (voice of experience here) Of course if you can do all this by the service menu then you won't even have to remove the back of the TV.

Sep 08, 2008 | Zenith C27A24T 27" TV

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Philips Magnovox FP5251 G104 (1995 model)...

if you can remove the screen you probably need to clean the mirror. if that is the case, don't use windex use a very mild solution of dish liquid (3-4 drops to the quart) then you will have to wash it several times with that. any harsher solution will remove the mirror surface. use a very soft , lint free cloth but not terry material. your bath room mirror has the "silver on the back side this one if it glass has the "silver on the front. if it is mylar don't press hard or it will streach and distort the pix. good luck

Aug 03, 2007 | Philips Magnavox 27MS343S 27" TV

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Green screen

If you can still see the video and some fine white lines running diagnally across the screen, it is very likely the picture tube itself which would likely be covered under warranty. If it is a solid green screen with no video, it could be a defective driver transistor or IC going to the picture tube.

Dec 18, 2006 | Toshiba 13A26 13" TV

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Phillips Big Screen Older Model

It means the fluid that cools each picture tube is low in the green but where did the fluid go,remove the back cover and check for a fluid leak towards the front side of the chassis and if any it should be right below one of the picture tubes.The description of your problem tell us you have a rear projection set but the heading shows a direct view tv.?????????? Since it was move the leak is only a possibility there could be other reason.Be careful and be sure set is unplug.

Sep 29, 2006 | Philips 32RF50S 32" TV

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