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Author Topic: WG 19K7203 no horiz wdth adj  (Read 1912 times)

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kardenm

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WG 19K7203 no horiz wdth adj
« on: November 01, 2011, 02:25:24 pm »
Here's another! (yes, they're piling up). 
This is a Wells 19K7203 which was working fine after I repaired many bad solder joints.
Now, the picture has expanded horizontally and the horiz size adjustment has no effect.
Any hints??  Thanks!
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ed12

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Re: WG 19K7203 no horiz wdth adj
« Reply #1 on: November 01, 2011, 04:25:54 pm »
vr105 and vr106

ed
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kardenm

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Re: WG 19K7203 no horiz wdth adj
« Reply #2 on: November 18, 2011, 11:38:03 am »
Thanks ed12.  Definitely not these pots.  They work fine.

Must be some component in the horiz section.  Cap maybe?  Wonder what typically causes this "overscan" in the horiz direction?
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fredster

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Re: WG 19K7203 no horiz wdth adj
« Reply #3 on: November 18, 2011, 12:54:02 pm »
I'm not real hip on the 7200 series, but the horizontal width coil is adjusted on older ones. There is a few mylar caps that need replaced in those.

Start here maybe : http://therealbobroberts.net/wc.html
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sarge

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Re: WG 19K7203 no horiz wdth adj
« Reply #4 on: November 18, 2011, 01:32:14 pm »
Check Q603 2SD669
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kardenm

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Re: WG 19K7203 no horiz wdth adj
« Reply #5 on: November 18, 2011, 02:45:52 pm »
Thanks.

No width coil on this one.
Q603 tests good as well as R625, C601, and D601 and 602 which are the components the guy at Wells tech support told me to check.  
 :badmood:
« Last Edit: November 18, 2011, 02:49:15 pm by kardenm »
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