Rolling lines from bottom to top on Toshiba 57hx81
I have a Toshiba 57hx81 and recently began having problems with it. At all times when tv is on, there are lines that roll from bottom to top, sometimes slowly, sometimes fast. The lines are seperated about 2 feet, always seperated the same distance. I thought I might have been getting intereference from something but couldnt eliminate a possible source. This is happening when I watch both cable and dvd's.
Hyper module out, picture become spuratic, due to frequency
drift in tuner sub assy. , module 23148024 , needs new
capacitors, 10mfd X 16 vdc....problem is! this module is no longer available, so if you can find a source great!.. expect to
dish out $230.00 + for part, not unless your an electronics guru,
and replace capacitors...AP
Sounds like filter cap in the main ac power supply if you can spare 100.00 you can buy a incircuit cap tester from mat electronics they work great make sure tv in not plugged in and caps are discharged get back to me
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Mike I suppose it might be the Flex converter failing on you, you will probably want a repairman on this one, these are really complicated to work on and if there is about 5yrs of age on set it may need sent in for a rebuild on the flex.
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noted in the owners manual, if auto focus returns message "error" , it suggests to use manual convergence setting..failing that, is it resonable to suspect that the STK-392-110 (convergence (2)chips)are beginning to fail, bendt horizonital lines is the effect. you can check all the resistors and pico fuses (power board)near the chips for shorts, chances are they are ok. seeing that there is somewhat of a picture (kinda like 3-d). i would repaired it!.. while your there do the hyperboard repair as well by replacing the 10 caps with 16v@10uf. (causing a wavy vertical distortion effect).
jhinsincity: you dont need to be here, do you? the problem are the caps on the hyperboard, 10 -16v@ 10uf, rear access right hand green board, model 57hx81, the hyperboard must desoldered from main board. read the post on wavy lines,,
Sounds like a problem in the vertical sweep circuit. Check voltages to your convergence ICs. If they are not to spec then look for bad fuses and capacitors on the power board. These will throw off the DC voltage to the convergence chips causing the bow effect. I've had a single bad pico fuse ($1) cause this symptom.