Question about Philips 43PP9202 43" Rear Projection Television

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The TV screen is blurry/fuzzy - Philips 43PP9202 43" Rear Projection Television

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SOURCE: Blurry screen

coolant fluid on picture tube may be contaminated replace it an setbe ok (this is a technician job)

Posted on Mar 29, 2008

Shuttle83
  • 1139 Answers

SOURCE: Blurry/Fuzzy Picture/Double Vision after power outage

Hello stevenkgray and ADIMEN,

I think what has happened is the your TVs are out of focus which could be due to a voltage problem. First I would warn you that this is a problem in the High voltage section of your TV and caution should be taken, in fact I would suggest that if you do not have a background in electronics that you get the TV checked and fix by a qualified TV repair technician. However if you do have a background the next few lines will make sense and you might be able to effect these repairs yourself.

Items needed for troubleshooting:

Schematic Diagram
Multimeter
High Voltage probe (40Kv)
Universal Video Analyzer (UVA)

1) Unplug the TV and take the back off of it

2) connect the UVA to the tuner F connector and setup the UVA to send a test pattern into the TV

3) Power the TV back up and turn to the channel set on the UVA

4) check the anode voltage on the CRT with the HV probe (connected to the Multimeter set to volts and grounded) and compare it to the voltage on the schematic.

5) If the voltage is not right adjust the focus and screen controls on the Integrated High Voltage Transformer (IHVT) to obtain the proper voltage.

6) Check the pattern to see if it is still fuzzy.

If the pattern is still fuzzy you may have to inspect/replace the IHVT and or its associative circuitry.

If you suspect that the IHVT is bad you can perform a ring test on the transformer using the UVA. (The instructions on how to do this are on the UVA quick steps pull out. or the instructions can be looked up on the web.

I hope this helps

Thank you,

Shuttle83

Posted on Jul 04, 2008

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Blurry/Fuzzy Picture/Double Vision after power outage


Hello stevenkgray and ADIMEN,

I think what has happened is the your TVs are out of focus which could be due to a voltage problem. First I would warn you that this is a problem in the High voltage section of your TV and caution should be taken, in fact I would suggest that if you do not have a background in electronics that you get the TV checked and fix by a qualified TV repair technician. However if you do have a background the next few lines will make sense and you might be able to effect these repairs yourself.

Items needed for troubleshooting:

Schematic Diagram
Multimeter
High Voltage probe (40Kv)
Universal Video Analyzer (UVA)

1) Unplug the TV and take the back off of it

2) connect the UVA to the tuner F connector and setup the UVA to send a test pattern into the TV

3) Power the TV back up and turn to the channel set on the UVA

4) check the anode voltage on the CRT with the HV probe (connected to the Multimeter set to volts and grounded) and compare it to the voltage on the schematic.

5) If the voltage is not right adjust the focus and screen controls on the Integrated High Voltage Transformer (IHVT) to obtain the proper voltage.

6) Check the pattern to see if it is still fuzzy.

If the pattern is still fuzzy you may have to inspect/replace the IHVT and or its associative circuitry.

If you suspect that the IHVT is bad you can perform a ring test on the transformer using the UVA. (The instructions on how to do this are on the UVA quick steps pull out. or the instructions can be looked up on the web.

I hope this helps

Thank you,

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