Philips Magnavox 20MT4405 20" TV Logo

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Posted on Jun 10, 2009

Top 2 inches seems folded or smashed

It seems like the top in folded or smashed and is brighter than the rest of the set. I looked for obviuos damage to the components and didn't see anything. It seems to get better and worse throughout the day. Any help would be greatly appreciated. I do work in electronics but never with TVs.

5 Related Answers

Vista Electronics

  • 1694 Answers
  • Posted on Nov 21, 2007

SOURCE: Tv problem

Bad capacitor in vertical output IC circuit + check power supply
Last, replace IC.......................T.

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Vista Electronics

  • 1694 Answers
  • Posted on Jan 27, 2008

SOURCE: Philips 27p6441/37 has a foldover

Bad capacitor / IC in vertical circuit...usually a shop repair...
If not corrected,could get worse in short period of time,.....T.

This model also requires an upgrade kit for future reliability...
Philips part number 483531057673 senior tech only.......

Anonymous

  • 6 Answers
  • Posted on Mar 16, 2008

SOURCE: horiz. lines across top of screen.

I agree with solution #2

I recently had my phillips 27" model 27PT6341/07 repaired after warranty expired due to white lines appearing at the top of the screen. The shop advised that it was a capacitor giving me the problem. So, after getting it back, I examined the repair job and the shop had replaced a capacitor at the back of the main board, next to the rear rca inputs. It is labeled 10uf 100v. I was told that it would fail again soon because it is a manufactures defect. For me it is at location 2465. Here are a couple of photos of the part.
http://farm4.static.flickr.com/3215/2337629026_eaa30cfa18.jpg?v=0

http://farm3.static.flickr.com/2411/2337627420_b45bbf1a74.jpg?v=0

Good luck,
Ed

Anonymous

  • 59 Answers
  • Posted on Jun 12, 2008

SOURCE: Fix for lines on tv

replace capacitor ..10 mfd @ 100volt (at very back of tv as viewed from front) under aluminum heat sink ,next to flyback transformer.

Anonymous

  • 1139 Answers
  • Posted on Dec 09, 2008

SOURCE: Picture is cut off at top and bottom

Hello This is an indication that your vertical output stage is beginning to malfunction. It could be the vertical output IC or the vertical coupling capacitor. I would suggest using the schematic and an oscilloscope to determine if the signal is correct. You may have to replace the IC or the capacitor.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

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Related Questions:

0helpful
1answer

Top worked fine yesterday but today tried to let down only clicked

It is a hydraulic pump that applies pressure to the 2 hydraulic pistons to raise & lower the top. So, check for something obstructing movement first.

The convertible top:
  • is motor-driven.
  • requires parking brake engaged to complete circuit for operation.
  • is equipped with a back window glass (42006) . The back window glass is permanently attached to the folding top back window curtain (52500) and cannot be opened.
--------------------------------------------------------------------------------------------------------------------------
VISUAL INSPECTION CHART Mechanical Electrical
  • Damaged fluid reservoir.
  • Damaged folding top hydraulic cylinders .
  • Damaged folding top motor upper and lower hose .
  • Damaged convertible top regulator.
  • Parking brake not engaged.
  • Open power distribution box circuit breaker CONV TOP (30A), fuse junction panel Fuse 1 (15A).
  • Circuitry open/shorted.
  • Damaged convertible top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .


  • Convertible Top Does Not Raise/Lower
  • Open circuit breaker or fuse.
  • Circuitry open/shorted.
  • Damaged folding top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .
  • Parking brake not engaged.


ewb10201.gif
0helpful
1answer

Does the back seat fold down to access the trunk

Not likely, If it does, there should be a pull strap located in the top, center of the backrest, They were pretty obviuos,although most of them were not equipped with this option. However the seat can removed if there is a broken or malfunctioning lock in the trunk! Hope this helps
1helpful
1answer

The image is compressed into a thin vertical line about 2-3 inches thick. The very top of this line is more brighter than the rest. I've read the problem could be the vertical output IC. I've downloaded...

Sounds like the vertical IC has gone out. Possible with some capacitors. Usually, when you take the back off, Its located on the right side towards the front. It usually has about 10 legs. I can't remember off the top of my head.
14helpful
4answers

Left top corner of screen is MUCH brighter than rest of screen. 2x2 inch area

I had same problem, go to the menu and under PICTURE BOOST there are 6 options choose BRIGHT FRAME and turn it OFF. Corner white blob is gone.
0helpful
1answer

Video folding over

I don't have a print for this set, but vertical issues have been common on these. Here's what you need to replace to restore the vertical:

IC421 (LA7832), D422 (MTZJ75-T2), D541 (RGP90J-5025-T3), R541 (1.8/2 W), C424 (100uF/35V) and C425 (470uF/35V)
0helpful
1answer

Print en enveolppe with hp color laser jet 2600n

Envelopes can be printed from tray 1 or 2. Select the type of envelope you are using from the PRINT dialog box or the driver. In your program, set the margins. Typical margins for a commercial #10 or DL envelope would be: Return Address Top margin 15mm(0.6 Inch) Left margin 15mm(0.6 Inch), Delivery Address Top margin 51mm(2 Inches) Left margin 89mm(3.5 Inches). For the best print quality, position margins no closer than 15mm (0.6 Inch) from the edges of the envelope. Avoid printing on the seams of the envelope. Envelopes with a peel-off adhesive strip or more than one flap that folds over to seal must use adhesives that are compatible with the heat and pressure of the printer fuser. the extra flaps and seals can cause wrinkling, creasing and feed jams, could even damage the fuser.
0helpful
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Convertible top

here's some info

Symptom Chart Condition Possible Source Action
  • Folding Top Does Not Raise and/or Lower
  • Blown fuse(s).
  • Circuitry open/shorted.
  • Damaged folding top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .
  • Parking brake not engaged.
  • Go to Pinpoint Test A.
  • Top Hesitates and/or Comes Up Uneven
  • Damaged folding top hydraulic lift motor and plate kit .
  • Damaged folding top motor upper and lower hose .
  • Damaged folding top hydraulic cylinder .
  • Damaged folding top linkage.
  • Go to Pinpoint Test B.
  • Top Does Not Raise or Does Not Go All the Way Up
  • Damaged folding top linkage.
  • Damaged folding top hydraulic lift motor and plate kit .
  • Go to Pinpoint Test C.
  • Hydraulic System
  • Damaged fluid reservoir.
  • Damaged folding top hydraulic cylinder .
  • Damaged folding top motor upper and lower hose .
  • Go to Pinpoint Test D.


Lift Cylinder, Power Top Removal and Installation
NOTE: The cylinder rods should be in the fully-retracted position.
  1. Remove pump and motor as outlined.
  1. Remove the upper and lower hose fitting from the folding top hydraulic cylinder (50600) . Use absorbent rags or a container to catch any hydraulic fluid that leaks out when removing the fittings.
  1. Remove each of the service cylinder plugs one at a time and attach the hose fittings. NOTE: Be sure each fitting is installed in the correct position on the folding top hydraulic cylinder .
    NOTE: Make sure that the tetra seal is installed in the bottom of each of the folding top hydraulic cylinder ports before attaching the upper and lower hose fittings.
  1. Connect the folding top hydraulic lift motor and plate kit (533A00) to a 12-volt power source and cycle the folding top hydraulic lift motor and plate kit in and out several times to purge the air from the hoses. Some noise squeal may be noticed due to the air.
  1. Carefully remove the rubber fill plug from the back and the reservoir and check the fluid level. The level should be at the bottom of the filler hole. If necessary, add Synthetic Mercon® Multi-Purpose Automatic transmission fluid E6AZ-19582-B (ESR-M2C163-A2) or equivalent.
  1. Replace the fill plug with a new fill plug.
  1. To install, reverse Removal procedure.
-----------------------------------------------------------
36helpful
1answer

How do you fold lowrider headphones?

It's easy,
Step1: rotate the earpeices so that either the cushions face up or down
Step2: fold one side inwards by bending the rotating elboe inwards, this elboe is located one inch above the top of the cushion
Step3: now do the same for the other side
Step4: as you fold/rotate the second earpeice, do so in a way that this earpeice lies underneath or ontop of the first folded earpeice

Note: as you do step 4, you will notice that the middle of the top band starts to bend to accomodate the motion of this folding process

Add. Note: the mic may be sticking out at an odd angle by now, rotate it towards the rest of the mass that is now your folded headphones...... now they are ready for your pocket
0helpful
1answer

2 inches of picture from top is brighter and picture in tthat area is distorted

Hmmm, could be anything from dirty optics, to a convergence problem....accordianman
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