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well i didnt think it was all that possible for a crt stored in a closet would develope a heater cathode short from sitting idle. so i took another look at the chassis im working on and there is a resistor off the bright pot that in early models have a 1 meg resistor and newer models have 500k or a .470meg but mine appears to have a factory mistake having a 2.2 meg resistor in place and the solder looks factory. i guess if no one ever turned the bright down no one would have ever known the wrong resistor was in there. so after changing the resistor to a 500k the bright works fine now and no lines across the image. bright up full does give the lines so i made the change for retrace and, no more lines. so the 7jp4 that i thought was bad is not, its good,lol.
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