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#1
08-06-2016, 09:57 PM
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Mahogany Predicta Pedestal
A friend of mine heard I restored my blonde Predicta pedestal and asked if I would restore his. He brought over this mahogany version with optional UHF tuner. The flyback looks pristine and the chassis shows no signs of ever being repaired. So here goes another...
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#2
08-06-2016, 10:03 PM
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The CRT is the 2.34v CRT and initially tested bad. I thought I was going to have to call and give my friend bad news. I decided to cook it at 3v for 4 hours and see if I could breathe life back into it. After a few hours I brought it back to the CRT tester. Emissions came up into the good section quickly. I hooked it up to a restored Predicta chassis and I was rewarded with a bright raster! Now to get my parts list together and do some cleaning..
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#3
08-09-2016, 04:05 PM
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The printed circuit board is out and I placed my capacitor order today. This board is very clean with no cold solder joints or questionable repairs. I'll start replacing out of tolerance resistors while I wait for the caps to come in.
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#4
08-10-2016, 12:56 PM
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All out of tolerance resistors have been replaced on the printed circuit board. Now awaiting my cap order to finish off the pcb.
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#5
08-10-2016, 07:33 PM
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Quote:
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
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#6
08-11-2016, 08:35 PM
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Funny Tom...while I'm waiting on the caps to come in, I took time to clean the case and the CRT housing with lense. The mold was very thick, but Easy Off oven spray made quick work of it.
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#8
08-12-2016, 12:28 PM
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I think coating them won't work. I've seen knobs made of similar plastic that were clear coated and the crud formed underneath causing cloudiness and the coating to start flaking off.
Yes, higher temperature and humidity do seem to accelerate the deterioration. It's been my experience that it will always start coming back. It may take months or years but haze and the stinky smell always return.
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#9
08-12-2016, 01:53 PM
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My cardboard insert that seperates the video cable from the hv, yoke and CRT filament cables fell apart when I began cleaning the wires. I found that a toilet paper roll works perfect as a replacement.
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#10
08-16-2016, 10:50 AM
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The main pcb is all recapped. Now onto the rest of the chassis.
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#11
08-16-2016, 12:42 PM
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The rest of the chassis is recapped, including all of the electrolytics. Now I need to reinstall the pcb and give it a slow power up.
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#12
08-16-2016, 08:18 PM
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To clean and preserve that CRT front cover I suggest Novus #1. Then if you want anything additional to coat it high is probably not necessary but it's up to you, use Mothers Back to Black which you can find at any car parts store.
George
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#13
08-17-2016, 08:46 AM
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The fine tuning has a broken part that I have to get from Larry to make it work again. Here is a picture of the set while waiting in that part. I added a little toner on the bottom half and some clear finish just to touch t up. It's almost done and my friend can't wait to watch it.
Last edited by Radiotronman; 08-17-2016 at 08:47 AM. Reason: Spelling
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#14
08-17-2016, 10:11 PM
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It was fun to do two of these pedestals back to back. I would love to find a tandem set with the long cable to work on. That's the only Predicta I haven't worked on yet or have in my collection. Maybe one day I'll find one.
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#15
08-19-2016, 03:25 PM
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Looks really great!!!
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