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 Post subject: RCA Victor 8-T-241 TV
PostPosted: Oct Sun 01, 2017 3:02 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 37
One of these came up for sale locally for $99.00 Looks pretty clean. I'm tempted to buy it! Have not finished my Hallicrafters 505 yet! Here is a link: http://www.ebay.com/itm/Vintage-1940s-R ... SwIdpZvc4z

Are these sets problematic?

Thanks in advance!


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Sun 01, 2017 4:05 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 12941
Location: Fernandina Beach, FL
It looks a lot like the 630TS which produces quite a nice picture. There is a lot of room under the chassis to work.

The downside may be the CRT. If it is bad, one would need to be purchased for replacement. I think it uses a 10BP4, which is rather common but getting more expensive as time goes by.

If it were near to me, I would buy it in a second. But your mileage may vary.

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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Sun 01, 2017 4:42 pm 
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Thanks Don! The inside of the chassis looks so clean with lots of room. I suppose its worth taking a chance!
About 15 miles from my home!


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Sun 01, 2017 6:44 pm 
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Location: Long Island, N.Y.
I have heard those are excellent players when properly restored. Some even swear to them player better than 630TS! RCA might've did some slight tweaking to the original 630 chassis by then. The only negative side of post-8TS30 models is they never have, and likely never will, be very popular with collectors. TV's were quickly becoming basically square wooden boxes at this time. If you like it, go for it - it's a nice example of that model.


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Sun 01, 2017 6:54 pm 
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Joined: May Sun 17, 2009 10:08 pm
Posts: 320
Location: Massachusets, 02019
If you need a crt let me know I have a few good spares


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Mon 02, 2017 6:58 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
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Having second thoughts about the RCA 8 T 241, It is kind of bland. I found a lot of 3 sets, one is an RCA that similar to the 630TS, the others are Fada. Looks like they need lots of work though. Here is a link to the ad: https://worcester.craigslist.org/atq/d/ ... 97208.html I think they all have the same RCA chassis.

tvdude211, Thanks for the info! I'll keep that in mind.


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Mon 02, 2017 9:15 pm 
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Location: Chicago, IL USA
That's an RCA 8TS30. Yes, I'm pretty sure all three of them use the same chassis as the RCA 630TS. So they'll all be great performers once restored, but also very heavy - around 95 lbs each !


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Tue 03, 2017 10:45 pm 
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Location: Massachusets, 02019
The blonde set has been converted to 12 inch set.


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Wed 04, 2017 1:35 am 
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Location: Long Island, N.Y.
tvdude211 wrote:
The blonde set has been converted to 12 inch set.

Yes, but interesting that it's a period conversion. The 8TS30 has potential, although the back and HV cage is missing. It was the last of the really attractive '40's RCA 10" TV's.


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Sun 08, 2017 4:32 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
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Thanks for everyone's input! I went and looked at the 8T241 and decided to buy it. It is complete and looks all original. I've given it a thorough cleaning and checked all the tubes and all look good with the exception of the 1B3 which I replaced.

I have downloaded the Sams manual from early television: http://www.earlytelevision.org/pdf/RCA- ... s-74-8.pdf

My set looks identical except that I discovered it has an extra tube. Looking at the picture of the top of the chassis on page 3 just in front of the power transformer between C1 and V13 I have a 6K6GT sitting there with it's associated caps and resistors not found in the schematic. Why is this? Is this unusual, or were there different versions of the 8T241?


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Tue 10, 2017 4:20 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 275
Location: Elkhorn,Wisconsin,United States
You have the extra tube because your RCA is a table top model. The console versions had a separate audio amp with a tuner, and maybe a phonograph depending on the model. A few months ago I recapped a RCA 8T-244 with a KCS-28 chassis.
Ed


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Tue 10, 2017 11:46 am 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 37
Thanks Ed! I feel much better now! Mine does have the KCS-28 chassis.

I am about to start recapping the set. I would like to re-stuff the multi section electrolytics but can't see how I can fit three or four new capacitors in these cans. They are only 1.24 inches inside diameter. I have several of the Miecs from just radios but I can only get two, maybe three in these cans. Any suggestions are appreciated!

Thanks in advance!


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Tue 10, 2017 9:03 pm 
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Location: Fernandina Beach, FL
Look at these "pencil" capacitors. Great temperature, ESR and voltage. They are skinny. You may be able to use them.

http://www.mouser.com/Nichicon/Passive- ... bmZ1yqujgg

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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Wed 11, 2017 5:24 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 37
Thanks Don! Exactly what I have been searching for. They should fit.


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Wed 11, 2017 10:40 pm 
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Location: Fernandina Beach, FL
stuben wrote:
Thanks Don! Exactly what I have been searching for. They should fit.

Exactly. These are the ones we use to stuff capacitors in HH Scott amplifiers etc.

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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Fri 20, 2017 4:51 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 37
I got the four cans re-stuffed and back in the set. These "pencil" capacitors fit easily. I have also replaced almost all of the large wax/paper. and molded types with metalized film, and the few small electrolytics. I read on the Early Television website that one can leave the mica caps in the set.

There are a number of capacitors that look like resistors that I am unfamiliar with. They are brown, about the size of a one watt carbon comp resistor with five color bands. All have a wide silver band then four colored bands. Looking in the parts list they are mostly have a value of 1500. I assume this is pf. No value for voltage is given. The last band on all these parts is a black band. Would this mean 100 volts? What type of capacitor should I use to replace these if it is necessary to do so? I will try and post some pictures this weekend.


Thanks in advance!


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Fri 20, 2017 8:48 pm 
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Joined: May Fri 29, 2009 4:35 am
Posts: 1965
Location: Chicago, IL USA
Those are ceramic and very reliable. Don't mess with them.


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Fri 20, 2017 9:01 pm 
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Location: Fernandina Beach, FL
bandersen wrote:
Those are ceramic and very reliable. Don't mess with them.


Absolutely, "+1" as they say.

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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Mon 23, 2017 5:27 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 37
Sorry for the slow response. I very much appreciate everyone's input

Good to hear that these capacitors in question are ceramic and reliable! I was hoping that this would be the case. Only three or four capacitors left to replace. Should have them by mid week.

Are there any parts in the high voltage cage that need replacement as a rule? I checked the doorknob capacitor and I get 430 ohms, should be 500, so it's within 20%. Parts list says it's rated for 20,000 volts, but I do not see a tolerance. There are a few resistors under the board that would be a real chore to get at. Hope they are okay.

Checking the candohm resistors, I read 650 ohms on section A, 615 on section B and 870 on section C. Parts list shows 650, 650, and 850 for A,B,and C. so hope I am okay here.

Looks like I'm getting close to powering up the set!


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 Post subject: Re: RCA Victor 8-T-241 TV
PostPosted: Oct Wed 25, 2017 9:21 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 37
Got all the capacitors in the set. Installed all the tubes except the 1B3GT and the picture tube. Set passes the dimbulb test. Went to install the picture tube, and when placing the neck of the tube into the yoke I felt it catch on something. Upon removing the tube I found what appears to be a plastic insulator that is about 1/8" square by about an inch long. It goes between the windings inside the yoke. I see three others in there. Should I carefully glue it back in there? If so what glue would I use? I looked at the winding with 5X eye loupes and see no evidence of damage to the windings. Any suggestions are greatly appreciated.

Thanks!


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