Possible picture tube problem

1st my picture all of a sudden became waterwashed the red was still visable but hazy. I believe I need the exact value for my tv model # f35317 for the param # 01-23 I don't want to guessimate I had I tech come out and he said it would cost 395 for some circit part for the picture tube but after looking at the labels or the TV we found one that said before assuming a picture tube problem try the front panel adjustments for the param # and select the proper value and now I need the values from 01-23 I have a list of the value Ranges but I would Like to have the exact number if possible.

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Master
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Best thing to do if the eeprom is corrupt is to buy a pre programmed eepromed. They have the factory settings and you may need to tweek these setting depending on how old the set is. BUT i HAVE SEEN IN THE PAST A PEEP TRYING TO ADJUST THERE OWN SET WITH THE SERVICE MENU!!!!!dont do it. FIRST OFF THE # 1 THRU 76 ARE NOT USED AT ALL. It would be best to get an authorized RCA repair person who knows what they are doing with these sets. As theres several HI Voltage saftey issues with repairing a set with no user replaceable parts inside them. Good Luck

Posted on Jun 23, 2006

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Master
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Sounds like the tech you had there isn't too familiar with the CTC chassis. I doubt that your problem is the CRT. RCA ctc chassis have a problem with the tuner grounds breaking and this allows pulses to spike on the data control lines for the eeprom which can reprogram it and cause just about any problem from a dead set to a perfectly normal set and everything in between. First this should be eliminated by opening the tuner cover on the bottom of the board and resoldering the 28 connections if necessary. If the tuner is ok then it sounds like the paramaters in the service menu should be checked. There is no perfect number to set the paramaters to. It depends on the characteristics of the unit and is different on each set and determined by the tech. The service manual gives a procedure but I've been doing it so long I can get the drives close enough by using the black in the picture as a guide for the individual drives (raise them till you see the color in black areas and back off till it just goes away). In most cases this is more than satisfactory. If the paramaters do not solve the problem you probably have a componenct failure. It should not cost much to repair no matter what it is. First get a new tech, one that is qualified, to look at it. Good luck.

Posted on Jun 23, 2006

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