Question about Philips 60PP9352 60" Rear Projection Television

6 Answers

I have no control on the tint (faces are green & cannot adjust)

I have put this unit on a color bar gen. The tint has no control at all, I have checked all connections to no avail. I would appreciate any help in this matter.

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  • hesco Jan 20, 2009

    there is no glycol on the board as I have stated there is no control at all with the tint control it shows that the range is adjusting with the remote, but to no avail.
    I have found no referance in the digital set-up. I have been a Electronic Tech. for the past 40 years, and I do know about electronics with a very extensive background in the Television Industry.

  • hesco Jan 22, 2009

    the gray scale is fine the on screen display for the tint shows the values changing but the tint does not change at all.

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6 Answers

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  • Philips Master
  • 8,617 Answers

The first thing that comes to mind is that the coolant needs replacement in the CRTs especially the blue and the green. remove the rear panel and while the set is playing look directly into the lens of the Blue and the Green CRTs. You will notice right away if the coolant is comgealed or has bacterial growth in it. The red is hardly ever affected. My quess is that the coolant will need replacement.

Posted on Jan 22, 2009

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This is a rear projection CRT TV, on this kind of set a convergence problem can easily be confused with RGB gain problem.

If you cannot set up RGB using color bar generation, ensure that all CRTs are working, and test the STKs and pico fuses on the convergence board.

If convergence and CRTs are OK, then test RGB circuit.

Posted on Jan 21, 2009

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Either can be the effect of the magnetic field causing this.this mostly causes if its placed near to any such electronic device thats breaking the megnetic effect on the tv screen.keep it away from all the other electronic devices for two three hours and then check.keep the tv on for that 2-3 hoursbut away from the devices. if that does noit solves the problem.then it could be the inner main circuit board problem.the stk ic must be checked and replaced.

Posted on Jan 20, 2009

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I do not have schematics of this TV, Philips, 60PP9352 but what comes to mind, does TV show green tint in Color or in gray scale picture (colors off)

If TV gives green tint in colors, then it can be problem of Burst signal, reference signal from fly-back (H-pulse) in color decoding circuit.

If green tint in gray-scale (colors off, black n white) then its problem of white balance adjustment. Requires RGB gain adjustment.

I need service manual or exact model number of this TV to go further in diagnosis.

Posted on Jan 20, 2009

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It indicates problem with stk ics on the board.replace them to solve the problem

Posted on Jan 20, 2009

  • chapli Jan 20, 2009

    It needs to be degaused,it is caused by the earths magnetic force, or could be caused by if you have un-shielded speakers too close to it, the magnets will cause it.

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  • Master
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Hi!
I will say that you probably still have the clear liquid (Glycol) still on the board. I recommend cleaning with a degreaser spray and brush it off with a clean 1inch paint brush. You can get the spray at Radio Shack The glycol is hard to remove and is conductive to electricity.

Posted on Jan 20, 2009

  • Rylee Smith
    Rylee Smith Jan 20, 2009

    Also, check user convergence adjustment is set up per user instruction manual.

  • Rylee Smith
    Rylee Smith Jan 20, 2009

    Also,contaminated coolant in front of green CRT would be another reason for green tint. The coolant can be replaced seperately from tube saving on repair cost.



    Thanks

    Rylee

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Hello YankeeTwidgt,

Here we go you will need a schematic diagram (You may already have one but I thought I would mention it ), an oscilloscope, a TV signal generator (NTSC color bar, RGB purity screens, and pattern screen), and a voltmeter (I would prefer you have a VTVM, but a digital meter with high impedance (>=10M) will be ok).

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Once this is done your screen should be dark or dark red, gradually adjust the R pot until the screen is pure red and the voltages, and signals match what is seen in the schematic (mark this point on the pot and the return the pot to fully counterclockwise).

Do the same for the Blue and Green Controls (Blue first and then Green).

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I wish you success,

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1 Answer

Green tint I can't seem to fix


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By the way, the best way to adjust the picture settings on a
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Hello paulaspec,

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1) turn color and tint fully counter clockwise until you have a black and white picture.

 

2) connect the color bar generator to the TV (ch 3) and turn it on, you should see bars in various shades of gray

 

3) adjust as best as possible the color and tint controls to obtain the color bars on the screen Red Green Blue.

 

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5) adjust the focus screen and control grids to match the ones on the schematic diagram

 

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I hope this helps,

Thank you,

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