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#1
06-29-2014, 01:59 PM
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1980 Magnavox 13" color
I got this set from a TV collector in L.I. along with some '60s b&w sets.
It's a May, 1980 Magnavox 13" solid state color made in Tennessee USA. The controls needed cleaning and it has a fantastic picture. Here it is showing DR Spalding the clown terrorizing some people in The Devil's Rejects using my macbook camera the exposure is quite high but I didn't want to mess with the TV's contrast and brightness controls since I set it up to look amazing in real life already. I had a 1984 Magnavox with almost the same cabinet but the back tag stated it was a Philips product. This one doesn't say anything of the sort. 
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#2
06-29-2014, 05:37 PM
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I think that's the one that uses a fold down modular chassis. 13C1, IIRC.
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http://www.youtube.com/user/radiotvphononut
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#3
06-29-2014, 06:17 PM
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The Philips/Magnavox plant is in Greeneville, about 1/2 an hour from here..Knew some people who worked there-They typically had some of the HIGHEST quality ratings WORLDWIDE in the entire Philips organization.
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Benevolent Despot
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#4
06-29-2014, 06:37 PM
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Well I haven't had it open yet, but when I do, I'll post some pics. On this set, the customer controls are thumbwheels and I was able to clean the contacts with the cabinet still on. Chassis number=13C201
Been running it all day and it just looks right.
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#6
06-29-2014, 09:56 PM
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It's funny that the 13C1 and 13C2 are nothing like the 19/25C1 or 19/25C2. In fact, I think the 13" chassis is a couple of years older. In 1980, the 19" sets still used the T809 chassis and the 25" sets used the T815 chassis.
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http://www.youtube.com/user/radiotvphononut
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#7
06-29-2014, 10:35 PM
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Hey radiotvnut,
I have no idea about these chassis.. Not familiar with any of the ones you've mentioned. My experience with Magnavox is the T997 which was a 70s 12" b/w chassis, and the U-911 which was a 60s tube color chassis. Is it accurate to assume that, Magnavox as a company, kept the same TV chassis types after Philips took over? This is a great set, I'm going to open 'er up soon and do my usual maintenance. This includes changing out-of-tolerance resistors, cleaning out the crt neckboard pins and any modular connectors, and reflowing high-heat circuit traces. I usually leave all but the smallest lytics alone in something this age, which is in working shape.
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#8
06-29-2014, 10:45 PM
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I think NAP bought Magnavox in the mid '70's and they kept a few of the old Magnavox designs around for a brief period. By the early '80's, most everything was NAP designs, for the exception of the Exx series chassis designs that were carry overs from GTE when NAP bought Sylvania/Philco in '81.
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http://www.youtube.com/user/radiotvphononut
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#9
06-29-2014, 10:58 PM
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^Good info, thanks!
In the opinion of the board, how did this era of Magnavox hold up against, say a comparable 13" system 3 or a ctc-97ish RCA? I tend to only show interest in American-made 80s TVs, even though I do collect Panasonics and Sonys from that time.
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#10
06-30-2014, 12:04 AM
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The Maggies of that era seemed to hold up about as well as any of the rest of them. I don't have much experience with the 13" sets; but, the 19" and 25" sets had a 4-lead safety capacitor in the horizontal circuit that was prone to shorting. The other problem was bad solder joints on the module sockets.
__________________
http://www.youtube.com/user/radiotvphononut
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#11
06-30-2014, 03:38 PM
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Quote:
of anything built. IIRC these had a Phillips tilt down modular chassis not a child of maggy or sylvania. But its been a long time......... 73 Zeno 
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#12
06-30-2014, 08:45 PM
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So I gather that these are just alright sets?
Must've gotten a good one. Is the C3 really one of the worst chassis ever built? I had 1 or 2 of em over the years and both worked as found, but, they weren't interesting enough to keep so I chucked em.
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#13
06-30-2014, 10:42 PM
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The C3--an the C5 25" versio are the WORST chassis NAP ever produced--IMHO.
The one you have is a modular ,C2 set, I haven't seen one in long time. Never worked on many either. Seems like it was a lot like the T-809, somewhat different layout but REAL different from the C3 or E31 sets.
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#14
09-08-2014, 01:03 PM
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So this TV has developed a video issue...On a black raster, or a night scene, the brightness changes from one side to the other. (it is not a uniformly bright background). Should I just recap the neckboard and check for out of tolerance resistors? Normally this cures this symptom, but I was wondering if someone had the prints for the C2 chassis (the fold down chassis). I've already found 2 charred resistors in the horizontal osc section, 330k 0.25W which I changed with 330k 1W parts.
The CRT is excellent otherwise I wouldn't bother. I'm willing to bet that someone on the board has repaired this exact symptom in one of these years ago.
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#15
09-08-2014, 02:55 PM
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"Shading" is nealry always caused by horizontal getting into the video, from a bad capacitor in the video bias supply for the drivers for the CRT cathodes. Usually--there is a capacitor off of the flyback, 10/250 or so. On your set--it MAY be higher, or not--and may be on the chassis, near the horizontal section, or possibly the power supply area. It MAY be on the CRT board, but likely not.
IF you see an electrolytic cap of 200 or more volts on the CRT board--this is likely the one. If not--hunt for it on the chassis. BE AWARE--that even if you DO find one on the CRT board--there MAY STILL be one near the source--on the chassis.
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