Saga on Restoration of RCA Victor tv stillgoing strong.

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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:13 am

Well, I've found two of my problems. Apparently, the horiz. output tube somehow went to air.
The other is the phono tv switch accidentally got thrown in phono.
I now have hv, audio reception, and, still, a white line. Except, now, as I bring variac control up something under the chassis starts popping wildly.So, it's got another problem. Probably my fault. My guess is maybe a piece of loose solder, or whatever. I'll have to check it out again. If no luck, I'll have to bring it up whiole it's on it's side, and, see what's popping. Not looking forward to that.
Apparently, the new I F transformer is closer on the tuning also, as I'm getting better reception. It came out of another KCS-47 chassis.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:15 am

Today I accidentally found one short in the boost circuit. Finally, not my fault! Two resistors in horiz. circuit were crossing each other.
I suspect that may have been causing the popping.
One went to the width control, and, otther was going to the adjustable capacitor block on back of chassis.
They were barely touching. Just enough that when enough voltage got through, it would cause some major problems. I'm going to try it tommorrow.
Wish me good luck.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:16 am

Well, for about two seconds, I started to get sweep, then, it went back to a white line.
I now have a burned vertical hold control.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:21 am

I am stupid!
Now that we have established that I called John Folsom tonight.
With all the careful checking I did, I still had windings reversed on vert. osc. transformer. He now has vert. working..
Two days ago hv was arcing loudly. Now, there is no arcing at all....
Does this set hate me??
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:22 am

Received a phone call from John Folsom tonight with a progress report on tv.
Several poor connections, my bad.
One incorrectly wired capacitor.
New damper filament transformer failed. Was arcing internally.
I made another mistake in wiring in new vert. blocking transformer.

He had to disconnedt cathode of damper from filament, and, change damper from a 6W4 to a 6AU4.
Didn't want to do that, but, I saw no choice.
I'm not going to be able to trust this set. I'll only try it once in a while to keep it alive. I'll have to find another tv. to watch...
Bill Cahill

P S In my signature, please note my new Avatar. This is my latest friend, Mike. Mike is a Chow mix with some Collie.
He is a very gentle, well behaved, loving dog. John Folsome met him at his house yesterday. Yep. Mike came back home with me. I am not getting rid of him. But, John did like Mike..
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:25 am

John Folsome called me today. Problems aren't over..
He connected a picture tube to it last night. Turned on the set, and, Bang! Complete with a cloud of smoke.
He unplugged it, and, put it up. Lookeda, and two resistors had gone up in smoke. A resistor accross the primary of the vertical output transformer, and, a 470 ohm resistor in B+ of audio out put. Speaker wasn't even connected at the time, so tube wasn't getting any voltage.
He replaced the burned resistors, and the one on vert. output again went up in flames.
He disconnected the entire vert. output circuit, and, using jumper wires, re connected everything on juper wires, one at a time. When he got to the resistor, it went up in flames again.
Even though it also checks good for him, he decided to try another vert. output tube. He did that, and, the set mysteriously stopped toasting resistors.
He now gets a good picture, but, vert. is constantly rolling.
He doesn't know what shorted, and, burned up the resistors.

I am now totally convinced I cannot trust this tv set.
I think it's going to be an expensive decoration.....

Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:28 am

TV section Page 10
Post page end of page 13

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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:30 am

I'm so happy tonight, I feel like a song. So, here goes...

Huckleberry Hound show theme

Rooster crow/ “ Kellogs presents the best to you each morning.”
……………………………………………………………………..
“The biggest show in town is Huckleberry Hound, for all you guys, and, gals.
The biggest clown around is Huckleberry Hound, with all his cartoon pals.
So, get a ring side seat so everyone can meet that Howdy, hound dog clown!
Don’t let yourself forget. Tune up your tv set for Huckleberry Hound.
That oh, so merry, chuckleberry, Huckleberry hound!
…….. Huckleberry Hound!”

Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:32 am

Qoute from SWR

Just for you Bill (and everyone else):
https://www.youtube.com/watch?v=QT9FuPN__OY


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:36 am

John Folsom reports in an e mail that set is now playing. He did clean ups, rewired power supply, replaced some caps that fell apart internally, and, neatened up even factory wiring.
He's going to align it tommorrow before shipping it back.
He reccommends going over set again before plugging in.
I'm adding a resistor to rectifier, because the voltage is high.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:38 am

Well, here it is. Here is a picture of what the picture looked like for John Folsom yesterday.


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:40 am

Well, I bit the bullet, and, stripped, and, lightly sanded the entire top portion of upper moding all the way around, which had extensive dammage. Just put on the first coat of stain on top edge of cabinet. I used special walnut. That got the depth of color correct. Now, when it dries , I'll rub in deep mahoganny to get the color correct.
When dried, and, I am satisfied, I will start putiing on the lacquer...
I may also do the outside edges of the doors, which also have extensive dammage. The case had a deep dent on the right front corner of the molding. I was able to do a decent repair on that . I need, however, to pick up some colorable patching compound filler to fill in a gouge gap.....

I have almost decided to also re finnish the top front portion of the large molding on bottom front. The front also is dammaged, but not deeply enough to re do it.
Besides, the decal there is mint, and, I want to save that.

I made a simple base on heavy castors for it yesterday, and, have put it above that. It's now 4" above the floor.
However, I wish to get a wider board. It's not wide enough, and, cabinet likes to teeter, which is not acceptable. I have it safe now, but, I still need a better board.

I will be using lacquer on it as the final finnish, as the original finnish was...
It will take time, but, it will look nicer.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:42 am

Here are more pictures as I am working on cabinet repairs. Here's the first one. I am filling in a highly dammaged front top corner.



Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:43 am

And, now, here is the next one. Note I have also stripped the top edges, and, have been stainning them. Still have some areas I need to cover better, and, I noticed more cabinet finnish dammage on edge of one side, and, other places.



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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:44 am

Well, folks, I talked to John on the phone today. As of yesterday, the chassis is on it's way back to me....
I am working on the cabinet.
When I have the set playing on the bench, I'll post another picture.
Then, when I have it working in it's cabinet, you will see pictures to close it off. I think I'll start off with showing a picture of front of it together, and, end up with it showing a picture. Give me time. I still have work to do, and, it's not back yet....
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:47 am

Behind those swinging doors!!!!
Chassis came back today. UPS did manage to break the antenna ouplomg coil. I'll have to locate another.
He did well packing it, and, it survived. I can see I'll have more adjustments on the bench to do before I can put it back together.
I'm still working on the case.
Did one final cleaning on inside of front glass, and, front of picture tube..
I will be checking out set on bench over week end, then, plugging it in to see how it plays.
I have tweaking to do to be sure.
Hope I will have it done by the end of next week.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:48 am

Good morning....
Have most of the cabinet work I have decided to do finnished. I made some cleaning improvements on one section I was going to re finnish, so, I'm leaving that alone.
Top edges are finnshed, doors, not quite finnished. Will be also touching up some scratches to the top, and, sides.

I'm nearly ready to try the chassis.
I have to replace the front shaft assembly on the tuner. UPS dammaged the bearing holding the shafts, so, now they wiggle considerably.
Have another assembly I can rob.....
Whoever offered the junk chassis, I am interested in it. Please pm me. Thanks..... Pictures will come soon.......
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:49 am

Today, I checked ac voltages on filaments.
At our line voltage, about 122 volts, I get the following:
Tubes: 6.35 volts
5U4 : 5.33 volts.
All within acceptable ranges. Tommorrow I try the set, and, will likely add a resistor to cut B+ voltage some. Juhn reported that set fully working voltage on 5U4 was 425 volts.
The called for voltage is 387 volts.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:50 am

Tried tv...
Horiz. white line, no reception, and, hear arcing sound in speaker.
Apparently, UPS did more dammage than I thought.

I'll start out simple, and re-check the tubes......
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 6:51 am

TV section Page 10
Post page 15.

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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 3:04 pm

Got vertical back, and, reception back. Both minor problems.
HV is arcing, however. Further, a brand new Japanese vertical output tube is glowing blue, and, flashing blue sparks.
Guess I need another tube......
I'll work on it more tommorrow.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 3:07 pm

Well, I thought so. Today I replaced the wire. Arcing stopped, but, no hv, either. Checked resistance on flyback. It is now half open.
That's the end of that flyback..
I'll be trying nother one.....
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 3:08 pm

Two things. UPS did some shipping dammage.
And, Flyback failed.
It's nearly done.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 3:09 pm

The flyback was arcing internally, then, quit.
No hv.
I replaced it, but, kept old fil. winding. Not good.
It was arcing, also.
Replaced it. Arcing stopped, but, no hv. Probably rectirier failure. Common problem.
I'll get it fixed.
What more can I say? Sme old, same old.
At least, that's one less thing to go bad.
Bill Cahill


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Re: Saga on Restoration of RCA Victor tv stillgoing strong.

Post by Bill Cahill on Mon Apr 15, 2013 3:11 pm

Tv's.
Page 10
Post page 16

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