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Crumbtrail TV Forums: TV Equipment: Projection TV Forum:
TESTING RESISTORS

 

 


dennisd01
New User

Feb 18, 2009, 8:28 PM

Post #1 of 2 (1335 views)
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TESTING RESISTORS Can't Post

I HAVE A 2003 PHILIPS PROJECTION T.V. I`AM HAVING TROUBLE WITH THE CONVERGENCE AFTER HAVING CHANGED THE COOLANT OIL.MY QUESTION IS HOW DO YOU CHECK THE RESISTOR`S.I HAVE INSTALLED TWO NEW IC CHIP`S.STILL HAVING TROUBLE ADJUSTING THE COLOR CONVERGENCE. MY PHILIPS IS MODEL=50P8341A CHASSIC=PTV915.ALSO WHICH RESISTOR`S ARE DIRECTLY EFFECTIVED BY BAD CONVERGENCE CHIP THAT,I REPLACED?


(This post was edited by dennisd01 on Feb 19, 2009, 4:13 PM)



Repair man
Enthusiast


Feb 19, 2009, 6:30 PM

Post #2 of 2 (1321 views)
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Re: [dennisd01] TESTING RESISTORS [In reply to] Can't Post

With that Philips model I would look for bad solder connections all around the area of the convergence ICs as well as plugs that connect to that board coming from other boards. I've repaired many of these sets and they nearly all had poor solder connections somewhere instead of the ICs.

A few more things, when you changed the coolant did you remove the yokes? Did you get the yoke plugs and convergence plugs back in the correct spot?

If you decide to test resistors, it's best to de-solder one end to get a more accurate reading (this way you are not checking them in circuit; often other components connected to the resistors can cause false readings) Then use an ohm meter -- Dan









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(This post was edited by Repair man on Feb 19, 2009, 6:36 PM)

 
 
 


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