68kMLA Classic Interface

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Color Classic messed up CRT?

Posted by: LarBob on 2017-03-14 13:28:39 I bought a Color Classic and it arrived today with a dead hard drive and a messed up CRT. Is there a way I can adjust it and fix it? The top and bottom of the displayed image look "bent".

Posted by: Macdrone on 2017-03-14 13:45:26 There are adjustments inside the back cover on the analog board. Pretty easy fix, use a non metallic tool to turn them and turn a little at a time to get everything back to normal.

Posted by: mraroid on 2017-03-14 14:14:11 I used some plastic adjustment tools like this to adjust my Color Classic CRT... https://www.amazon.com/gp/product/B000B61CSM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 mraroid

Posted by: mraroid on 2017-03-14 14:27:04 Gez!  That plastic tool kit was abouit $10 when I bought it.  I also bought this for $9.00: https://www.amazon.com/Universal-Color-Alignment-Tool-Set/dp/B005M6BY2A/ref=pd_sbs_469_2?_encoding=UTF8&pd_rd_i=B005M6BY2A&pd_rd_r=V5742414MG2TW78DNMQZ&pd_rd_w=BVv7d&pd_rd_wg=RjZ1l&psc=1&refRID=V5742414MG2TW78DNMQZ mraroid

Posted by: Johnnya101 on 2017-03-14 14:49:50 As others have said, theres little screws on the inside that can adjust them. Id look up the service manual. I think theres like 8 different ones...

Posted by: mrpippy on 2017-03-14 16:09:09 My Color Classic's CRT is also not straight, not as bad as yours but the picture is pinched in the middle. I have adjustment tools but haven't tried them, I suspect the analog board needs new caps (so many big electrolytics)

Posted by: EvilCapitalist on 2017-03-15 05:20:13 I've had a few like that.  The screen was pinched near the top only (not also at the bottom) and no amount of adjustment on the screws could get it to be correct.  I'm assuming that was caps but ended up trading the machine away so I never found out.

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