View Full Version : Zenith delta gun CCII and RCA Colortrak


TUD1
05-03-2016, 10:55 PM
I talked to Danny again today, and we got to talking about that old 1974 Sylvania that I used to have before it broke. Anyway, Danny said that I could have these TV's as a consolation prize since the Sylvania has a bad chroma IC that we can't find. I'll be picking these TV's up this weekend.

TUD1
05-03-2016, 10:56 PM
Here is the CCII with a delta gun.

Electronic M
05-03-2016, 11:36 PM
I have that same set. It has so many intermittents it never leaves my service bench....Of course it is my bench watcher so the back is never off, and when it acts up it gets slapped. :D

TUD1
05-03-2016, 11:54 PM
Which one? The RCA or the Zenith?

radiotvnut
05-04-2016, 01:50 AM
What Chroma IC do you need for the Sylvania? I have a junker chassis from the mid '70's that may have one on it.

zeno
05-04-2016, 08:48 AM
RCA was a beast. Big heavy tilt down chassis, weighed
more than a Zenith ! Lots of cold PC & they loved to blow
a special fuse in the HV. If thats blown there is a
Goldenrod on it. IIRC it was $6 or $8 back then.
It was an "interesting" set....

Zenith is probably an E4025W first yr CC2 upright. Has
either a 4 lead cap or separate caps like your upright.
That gets attention first. Otherwise Zeniths easiest TV
to fix. Biggest seller that year.

73 Zeno:smoke:

TUD1
05-04-2016, 09:09 AM
Radiotvnut, Danny told me that the after he replaced the Chroma IC, for a quick test he watched Judge Judy, and when it showed the audience, the color was fine, but when it showed Judge Judy, her face went green to pink.

Zeno, thanks for the information. Those old caps have to go.

radiotvnut
05-04-2016, 11:21 AM
I've had a few of those RCA's (CTC74, IIRC) and I don't know why they bothered to even put a handle on it. I think those were only made for a year or two and then they were replaced by the flat modular chassis with the MDR "do not service" regulator module. We actually had one of those later sets from '77-'78 and it got a new CRT in around '82-'83. Ours had the single knob varactor tuner.

Electronic M
05-04-2016, 12:02 PM
http://i1095.photobucket.com/albums/i469/ElectronicMemory/My%20Digs/th_DSCN2885_zps70cb3f3f.jpg (http://s1095.photobucket.com/user/ElectronicMemory/media/My%20Digs/DSCN2885_zps70cb3f3f.jpg.html)

TUD1
05-04-2016, 07:05 PM
Interesting that a Zenith of this era would be so unreliable. I like the look of that Zenith, I first saw one in another thread on here where somebody was trying to find one and they used your picture of your old garage, Electronic M.

WISCOJIM
05-04-2016, 09:42 PM
http://i1095.photobucket.com/albums/i469/ElectronicMemory/My%20Digs/th_DSCN2885_zps70cb3f3f.jpg (http://s1095.photobucket.com/user/ElectronicMemory/media/My%20Digs/DSCN2885_zps70cb3f3f.jpg.html)Now show a picture of the same bench the way it was last week when I was there!

.

jsowers
05-04-2016, 10:35 PM
Interesting that a Zenith of this era would be so unreliable. I like the look of that Zenith, I first saw one in another thread on here where somebody was trying to find one and they used your picture of your old garage, Electronic M.

I had the very same Zenith set 30 years ago as my daily driver and it was also very intermittent. It improved some after I worked on it, but just like Electronic M, I left the back off mine so I could get to it and fix it when something else went wrong and it was quite often. The only things I don't remember being intermittent were the tuner and high voltage sections.

I always said it was a TV meant for a repair man. I kept it going for years that way and finally decided to get a 32" Toshiba with a remote control and never looked back. It's in my basement now along with another couple of parts TVs I got to keep it going. I was always impressed with the design of that chassis and how everything fit together.

Even small transistors were socketed on that thing. I soldered them all in. I think the set had been in a smoker's house originally and it was gummed up and a little tarnished from that. It always had a beautiful picture, though, when it worked, and I left the instant-on turned on and was always amazed how quickly it came to life with that crackling sound.

TUD1
05-04-2016, 11:45 PM
My set was made in June of 1976. Danny said my set does not have instant on, so your set might have been a little older or newer. I hope this thing doesn't break TOO much, I would like to watch it once in a while.

Electronic M
05-05-2016, 01:06 AM
The joke in my post was misinterpreted...I've never had the back off mine, and it does not appear to EVER ave been removed in the set's lifetime. It produces a wonderful picture, but the grayscale wanders, the fine tuning drifts, vertical rolls occasionally, and some horizontal streaks occasionally appear...It can be annoying, but has never necessitated me pulling the back. I've always wanted to pull the back to re-seat the modules, spray contact cleaner and touch some service adjustments (which is probably all it needs), but am too lazy...All it needs when it acts up is a slap or two on it's side or for me to kick the bench it sits on, and usually it behaves its self for a satisfactory interval.

I might take Jim up on his taunt. :D Of the 2-4 times in the last 4 years my bench has been it's cleanest/most organized that photo is one of them. :tongue: ....Actually I can't quite take Jim up on that since I've shifted the mess around since he saw it, and could not recreate the EXACT state he saw it in to save my life.

WISCOJIM
05-05-2016, 07:23 AM
I might take Jim up on his taunt. :D Of the 2-4 times in the last 4 years my bench has been it's cleanest/most organized that photo is one of them. :tongue: ....Actually I can't quite take Jim up on that since I've shifted the mess around since he saw it, and could not recreate the EXACT state he saw it in to save my life.
Honestly guys, it looked like it had been set up and used for about 40 years. I guess that just shows how much work has been done there in the few years he's lived in that house.

.

zeno
05-05-2016, 08:52 AM
Some of these sets did have annoying intermittents. Probably
related to environment like smoke, greasy cooking etc.
Fixed them by soldering in all transistors & IC's, sand down
contact pins for modules. Also bent in the tiny fingers on
the modules for better contact & sprayed them down.
G-2 controls got bad spots & sometimes the chromatic switch
got touchy. A 330 ohm on the 9-90 would give int. problems
when first going, same thing on 9-57 flat chassis. Upgrade to
a 1 watt film. Also a 1.5 ohm in the H. out base on rear of chassis.
The bottom chassis still uses ground lugs so watch that.
For tuner drift ground the AFT white/blue wire at tuner. If
still drifts its the tuner. If not the 150-190 IF strip or switch.

73 Zeno:smoke:


The joke in my post was misinterpreted...I've never had the back off mine, and it does not appear to EVER ave been removed in the set's lifetime. It produces a wonderful picture, but the grayscale wanders, the fine tuning drifts, vertical rolls occasionally, and some horizontal streaks occasionally appear...It can be annoying, but has never necessitated me pulling the back. I've always wanted to pull the back to re-seat the modules, spray contact cleaner and touch some service adjustments (which is probably all it needs), but am too lazy...All it needs when it acts up is a slap or two on it's side or for me to kick the bench it sits on, and usually it behaves its self for a satisfactory interval.

I might take Jim up on his taunt. :D Of the 2-4 times in the last 4 years my bench has been it's cleanest/most organized that photo is one of them. :tongue: ....Actually I can't quite take Jim up on that since I've shifted the mess around since he saw it, and could not recreate the EXACT state he saw it in to save my life.

TUD1
05-05-2016, 11:09 AM
Be assured that I'll go through and DeOxit everything in the TV. I take cleaning very seriously when it comes to TV's. They will also be living in a dry, cool, dust free (constant vacuuming) environment.

TUD1
05-05-2016, 07:00 PM
The Zenith already has the Sprague Orange Drop horizontal capacitor. Danny doesn't think the back was ever off the set.

TUD1
05-07-2016, 09:54 PM
I got both of these TV's home today, and I'm quite pleased with their performance. I had to hook the Zenith directly up to the coax from the cable box because it did not like getting channel 16 for some reason. It has a very good picture except for some convergence issues. The RCA Colortrak however, is a different story. When I first hooked it up and tested it, I was BLOWN AWAY by its incredibly good picture. It is RAZOR SHARP with excellent colors. It plays much nicer than the Zenith with channel 16. The Zenith has a strange problem though. The 1976 13" CCII also did this. On the Charter TV guide, the picture is good with good sharpness and brightness and all that. But when the guide goes off, the actual program is way too dark. If you crank the brightness up, the guide becomes way too bright. There is no "happy medium." The picture shows the Colortrak recieving channel 16 UHF.

TUD1
05-08-2016, 08:57 AM
I've been watching the Colortrak, and I've noticed something strange. A few minutes after you turn it on, you'll hear a very loud pop/arc sound. I think it's a loose module connection. I'll be Deoxiting all that stuff anyway.

zeno
05-08-2016, 12:32 PM
I've been watching the Colortrak, and I've noticed something strange. A few minutes after you turn it on, you'll hear a very loud pop/arc sound. I think it's a loose module connection. I'll be Deoxiting all that stuff anyway.
Look at top right you will see that fuse. You may have to fold it down.
IIRC there is a white spark gap there, see if thats arcing.
The cold joints are on the board where the vert module plus on.
Check that over real good.

73 Zeno:smoke:

TUD1
05-08-2016, 08:18 PM
The RCA Colortrak cleaned up nicely and is working even better than before. The Zenith however, is being a peice of crap. I tried to clean the UHF tuner, and when I started to work it back and forth, the gears shattered. I'll go upstairs and clean it as normal, but this set is very high hours. Maybe it will be worth it.

Electronic M
05-09-2016, 12:59 AM
I may have spare tuners for that Zenith...

rcaman
05-11-2016, 11:00 PM
I have an rca ctc-74 in mint like new condition plays great and weighs a ton.
mine says xl-100 colortrak on the front.

rcaman
05-11-2016, 11:05 PM
And i have a chromacolor II and 2 of it's small brothers.

rcaman
05-11-2016, 11:10 PM
2 Motorola hybrid portables i have. one is missing the JA deflection module anyone here have an extra JA module. the crt's check excellent in these.

TUD1
05-12-2016, 12:32 AM
Nice sets, RCAman. I also have that silver 13" portable, although it is currently back in Atlanta awaiting repair. It lost its HV while I was watching it one day.

TUD1
05-14-2016, 11:29 PM
RCAman, here is an RCA console that says Colortrak and XL100 just like your table model. This is a picture from my friend Danny.

rca2000
05-14-2016, 11:37 PM
THAT is the tv I have L-O-N-G wanted !! I have THREE remotes for it !!

Where is he--and does he want to part with it?

rcaman
05-15-2016, 02:04 AM
i also had one of those consoles put a brand new crt in it never could keep the video on it would blink on and off. i tried everything i could think of i can't even remember what i did with that tv. i loved the black marble top.

sampson159
05-15-2016, 03:40 PM
those are excellent examples of rca technology and style.love this one and i want it
too.had a customer who had the identical set.every year,i would hit the crt.after 6 years,it finally went.replaced with another rca unit and last time i heard it was still going.that would be around 2009.had the heavy fold down chassis and the cabinet was first class all the way.one of the very best ever built

rca2000
05-15-2016, 06:45 PM
2 Motorola hybrid portables i have. one is missing the JA deflection module anyone here have an extra JA module. the crt's check excellent in these.


So---the one missing the JA module--is it for sale?

pretty sure I have at least one JA module--BTW--if it has the JA it is a solid state set..

rcaman
05-18-2016, 03:53 AM
I'm wrong on the module number it does have 2 tubes on it vertical output and horizontal osc. I'm thinking it had 6cw5 and a 6jw8 anyway i need a board and i will sell both of the Motorola tv's.

rcaman
05-18-2016, 03:55 AM
the module number is FA

zeno
05-18-2016, 10:27 AM
IIRC they had 4 tubes. 6BL8 h osc, vert out, damper & 20LF6
hoz out. Dont remember abt HV.

73 Zeno:smoke: