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DK Jnr retrace lines on half of screen

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Category: Technical
Forum Name: Tech, Maintenance & Repairs
Forum Description: Need Help? Ask Here
Printed Date: 13 Aug 2020 at 6:21am

Topic: DK Jnr retrace lines on half of screen
Posted By: PhilT
Subject: DK Jnr retrace lines on half of screen
Date Posted: 06 Nov 2019 at 11:46am
Hi all

I got a DK Jnr which I got from US, fired it up for the first time, works OK except for the monitor has retrace lines on half of the screen. I am really beginning to dislike CRTs!!

Can this fault be caused by chassis problems or is it going to be that the gun/yoke alignment is somehow out of whack? or something else?


Posted By: tb2000
Date Posted: 07 Nov 2019 at 12:44pm
Got a pic of said fault?

Posted By: Pinge
Date Posted: 08 Nov 2019 at 4:47pm
I guess a cap-kit will fix your problem.

I have had a few Sanyos with different issues, a cap-kit has worked every time.

If you have a couple of hours to spare take a look at Johns Arcade doing just that

Posted By: PhilT
Date Posted: 09 Nov 2019 at 10:19pm
This is what it looks like

Posted By: gunblade
Date Posted: 10 Nov 2019 at 12:30am
looks like low b+ and bad caps- although the convergence does not look too tasty, possible worry concerning the yoke
replace the caps, check b+ is correct

Posted By: PhilT
Date Posted: 10 Nov 2019 at 7:30pm
thanks. I will take a look at that.

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