I own a Zenith model SS1913W (Made in 1990) with a slight problem: The horizontal width is too wide - cuts off lots of picture. No marked pots to set it. I don't work on TVs, but it seemed it was somthing to do with the flyback Xformer. How would one set it?
Thanks, Lee
-- Lee Haymond
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Future Hardware -
Called overscan. And probably as it left the factory.;-( If no pot there could be a jumper or even an inductor. But be prepared for the geometry to go out even if you can set the width correctly.
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*No sentence fragments *
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
There's almost a dozen pots on the board, none are marked. Can't find a schematic, how would one determine what to do without one? Thanks
-- Lee Haymond
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Future Hardware -
You can experiment, but that would likely be very frustrating. Hope that someone else posts with some hints.
with the age of that set is is most definatly drifting caps look around the fly area for puffy caps that set has seen its days cheaper to by new
Don't even think of touching the pots! Modern TV sets don't just go out of adjustment, there's obviously a fault and if you start messing with the pots, no tech will be willing to touch the thing.
Reminds me of that old story about a valve radio brought in for repair - the customer says it worked fine until he hoovered out the dust and tightened up all the loose screws.
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*Growing old is inevitable, growing up is optional
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
Nothing seemed puffy. It seemed to make no noticeable difference when I swapped out 2 mylar caps, 1 between the H drive transistor's C & B, 1 between it's B & E. The E is connected to the heat sink & what looked generally like ground, C to the flyback x-fmr through a ferrite bead, the B to a small x-fmr, I'm guessing for drive step-up. I don't have a schematic, anyone got one? Am I looking at the right caps?
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