My tv model 60P8341A philips television screen is red and dull in color what do i need to do?
If your TV screen looks more red its red video output section is in trouble. Some philips circuts uses transistors while others uses ICs in that section. Philips magnavox model have both types. We here in India, have transistorised video output stages in Philips Magnavox sets. Whatever the ciruit type may be, the fault and its remedy is same.
Check whether your set has transistors or ICs used. If transistors are used, check the collector voltage at red video output transistor. If ICs are used, some sets uses a single IC for Red, Green and Blue output stages. Some of them have three ICs on board as Red,Green and blue output stages.
The video output stages are integrated on the base card of your TV. That is, a small square or rectangular board, pluged into the neck of the picture tube. You just find out the red,green and blue output transistors, or ics whichever may be used. It is ver easy to understand the video output transistors. They may be a little larger than other transistors.
An easy way is to locate the Red,Green and blue cathodes of the picture tube base board points. Check the voltage of the three of them They must be almost equal to each other, provided a little, that is, 2 or 3VDC difference is allowable and will be. In your case, the voltage at the red cathode may be , not may be, must be low. As cathode voltage lowers, emmision of that cathode will rise, and poise that colour is in excess. If the Red Cathode voltage in your TV is found low, say difference betwwen other two cathodes is 50v or so, repace the red output transistor or the Ic if used at that stage. If a single Ic is used in your TV as R_G_B outputs, replce the same. If three Ics are there, replace the red output control Ic. ok
If you have any more problems, inform fixya. They will send me alerts.
Oct 20, 2010 |
Philips Magnavox 27MS343S 27" TV