1982 Sylvania E32 19" color TV
Here's a 1982 19" Sylvania color TV that uses the E32 single board chassis. Being from '82, it was made after GTE sold out to NAP; but, the chassis is an original GTE design that was carried over after NAP bought them.
The cabinet style seems to be a carry-over from the '70's and I've actually seen the same cabinet used on some later Magnavox, Philco, and Sylvania TV's that used the NAP designed 19C3 chassis. This set came from a TV shop with a note indicating that the flyback transformer is bad. I have not tested it yet to confirm the condition of the transformer. From what I remember of these sets, they produced a decent picture. http://i538.photobucket.com/albums/f...psb02bd97e.jpg http://i538.photobucket.com/albums/f...psb2e4451f.jpg |
those flybacks arced like crazy.very sharp pics on this model.lots of bad solder joints around the flyback too.
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I did some testing and the B+ fuse is missing. I can't find any shorts with my DMM; so, I'm going to sub the fuse with a 100 watt bulb and see what happens. I also checked the CRT and it's strong.
I have a NOS flyback that I thought was for this chassis; but, my original flyback has a lead coming out of the bottom that connects to the focus control. The NOS flyback I have does not have this lead; so, it must be for a different chassis. |
I remember once being given a pair of sets with this cabinet. One was just like this, the other was modular. From the outside you couldn't tell the difference.
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Boy.. I remember those. We sold the Philco branded sets, as a secondary option in our Zenith shop. Zenith's were so pricey, my Unlce figured he better carry another line as well, so as not to loose a sale. They were the only ones that came close to Zenith picture quality, but I do remember he had quite a few warranty repairs. Not as bad as our GE fiasco in 1979 tho.......
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OK, the flyback is confirmed bad. After not finding any obvious shorts in the HOT circuit and with any of the sources that come off the flyback, I substituted a standard 100 watt light bult in place of the B+ fuse. The result was that the bulb lit up brightly; which, indicates a short. I then removed the flyback for testing on my Sencore flyback tester and it failed the ring test.
So, the hunt is on for a good flyback for this set. There is no part number on the flyback; but, the chassis number is E32-4 and it's in Sam's number 2034-1. If anyone can get me a part number or a good flyback, I'd appreciate it. |
BTW, here's a video I made of me testing this set and I managed not to let any of the magic smoke escape.
http://www.youtube.com/watch?v=IV4M7SqmAqo |
Great video. You could teach a course in safe and effective troubleshooting.
I worked in a shop 1981-82 when these were coming into the shop with this problem...from the warehouse! 1976-80 Sylvania-Philco sets had nice pictures too, but I was not happy when NAP acquired Magnavox. Nice use of the VA-48. my VA-48 needs some help, now I'm motivated to fix it. I have a Heathkit HV-meter w/ ring test that does something similar with 6 positions. It was almost never wrong. |
I found out that the part number is 50-3015344-2,-1 with no generic parts listed in the Sam's Photofact manual.
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That chassis/circuit board looks a lot like RCA's of the 80's.
http://i538.photobucket.com/albums/f...psb2e4451f.jpg |
Using a light bulb to see if there is a short in the HO is nothing new. It was covered in TM's 30 years ago. This E32 set was sold under Philco, Sylvania and Magnavox with Philco being sold as the lowest price model. At least half of all these sets sold needed a flyback before the warranty ran out. They were manufactured right here in Greenville, Tn. and I fixed countless numbers of them. They had a terrific picture when they worked and many were sold to motels.
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very good video.i prefer the e21 chassis that used a tripler.never see a bad flyback in those sets.regardless,those sylvanias produced terrific pictures.well done!
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I just found one for $10 that works..
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