Thread: Groovy CTC-15
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Old 04-17-2006, 08:39 PM
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Charlie Charlie is offline
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Join Date: Aug 2002
Location: Warren, TX
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Here's the photos I have so far.

Although I have video back now, the brightness still lacks a little. I have to turn the control nearly all the way up to get a comfortable degree of brightness... and also must have the CRT bias switch in the bottom position for a weak CRT... but yet the CRT tests just fine. All voltages at the CRT socket are pretty close to where they should be.

The focus isn't very sharp. However, the focus voltage is right on the money. High voltage is good as well.

I'm noticing that the AGC control is working more like a contrast control. Of course, it's kinda supposed to be a course contrast control, but the signal does not fade out all the way when turned to the left, and it does not overload to the point of pulling the picture if I turn it to the right. It simply gives more or less contrast.

One of the initial problems I noticed last year was the service switch will not produce a horizontal line... and this year is no different. If i put it in the service position, it simply cuts off the picture. No line.

I'm a little dissappointed that it's not playing better than it is. I've changed a lot of resistors that were way way out of spec. All the lytics have been changed as well. Nearly all of the caps on the boards are orange drops. I left those in. There was a small handfull of cheesy caps, and I've replaced them.

I guess it's likely many of these issues are related. If anyone has suggestions, please speak up.
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Last edited by Charlie; 03-07-2010 at 11:18 AM.
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