Hi ladywinn i just replaced my convergence ptk 150's and reassembled the left part of the tv chassis. i turned on the tv and there is no power to the screen. sound works great but i guess no power to the picture tubes. you sound like you really no your stuff. please give me a hint. thanks denny
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that tv has a convergence module and a convergence power supply it also has a block fuse on sweep module but i can promise you replacing a fuse will not correct your prob. the fuse is there for a reason if it opens there is a prob.but i dought its opened its located on sweep module there will be 3 block fuess in a row on the left side of the sweep module they are small red blocks good luck
This tv make a lot loose connections. If you re solder and nothing change, check fly back area's is OK?... Look around convergence board for liquid coolant ( some times CTR liquid coolant projection splitter , becarfull, Liquid is danger!!) Wash yous hands and clean chassis with acetone.
if you get to the red chk press the power button on remote numbers should appear lower right each time you hit power button nummbers change keep going till 00v00 appears press ch up then it should read oovo1 at this time press vol up now your ready
press 1 to toggel colors
use vol and ch buttons to move cursor
press mute to choose to addjust
press7 to save data
You can adj. from the front panel of the set using the channel and vol. buttons,if the set you have has a ptk 195 chassis,check and make sure you have adj. projection tv in screens of the menu,in not the convergence power supply has failed,replace the reg on the board,part number is 215530
Sounds like your convergence power supply board is bad if it is a ctc or ptk 195 chassis. Located above the main board on the left and dynamic convergence board on right. Has two plugs and held down with quarter inch screws. Most problems on the board is the IC on the metal heat sink which is stk 730-010. whatever you can see the part number on it. Unsolder with solder wick and solder in new. If this doesn't fix a new complete board will do.
Convergence on RCA P56940 chassis PTK195 can only be done by service center with RCA Chipper Check computer interface box. Sounds like possibly missing -15 volt or +15 volt supply to digital convergence circuit, bad i.c.'s U19503 or U19504. Supply voltages come from regulator supply transformer T19701 diodes CR19707 (-15 volts) and CR19709 (+15 volt)