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a real challange?
And I do mean challenge.
For I have the guts of an old FADA 895 Television. And I do mean guts, as in no case / enclosure. The story of this TV, it was built into the wall in a bar in the basement in my grandparents home in Pennsylvania, only the 10 inch screen ( face-place, controls ) could be seen from the bar, and the chassis was in a closet in another room behind. It was in it when they got the place, and told me it never worked. ( only gave a raster ) when the place was sold, I did not want to see it destroyed, so I had it boxed up and shipped to me. That was quite a few years ago. Biggest problem is, no enclosure. Another problem is, it has been damaged in the moves over the years, 1st IF coil is broken, have all the bits, not sure if it can be fixed. It's VERY old and has been sitting for almost 40 years. I'm not sure WHAT it is, but it DOES say FADA 895 on the chassis. And it looks a lot like an RCA 630 chassis. What ever it is,,, it wont be easy. |
According the the Radio museum it was a large combo unit. https://www.radiomuseum.org/r/fada_895895.html
It was almost certainly an RCA 630 design with whatever mods it needed to work with the 12" tube and other components. It may or may not slide right in an RCA Cabinet. |
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It definitely has a 10bp4 in it, i took it out and tested it last year. ( good emissions ) https://imgur.com/oguZYoC https://imgur.com/s5WkF39 |
Are you sure? that looks like a 12" tube to me, or is there another one?
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The chassis looks straight up 630.
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you are right,, its a 12lp4 ,, the numbers are hard to read because they are rubbed off, but it is an 895 https://imgur.com/bMoZUb7 |
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I have a Stromberg Carlson TV-10 which is their TV-12* with a just a wood shim added to the mounting to accommodate the smaller CRT. * Which is just a rebadged Dumont RA103 Chatham chassis in a Stromberg designed cabinet. If you can figure out which RCA it best matches getting a new IF can should be fairly easy. RCA successfully licensed the '630' chassis from 1946 to 1960 (as time went on licensees piled on mods to add AGC and large screen CRT support). Cabinet wise you could probably use an RCA cabinet or any clone cabinet if you're not set on the exact FADA cabinet. The first two RCA sets the 630TS and 8TS30 used IIRC a wider knob layout than the later ones like the 8T241 and 9T246. Heck you could even build a custom cabinet as homage to the configuration you remember. If you can't find a 12" cabinet you like you could get a 10" CRT and swap to it....lots of options. |
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I have pretty much done all I can with the CTC-16XL , aside from the IF alignment issues, & the slightly annoying retrace lines that pop up 6% of the time, (most likely will never understand why.) Now sitting in it's permanent location and used every week or so. |
As far as the broken coil on the FADA, the inner core is broken, wire is seen torn off, but all parts are there, fixable, no idea, I would have to carefully remove the bits one day, and look at it under a microscope to see how bad the damage is and if it can even be fixed or not.
It's not that complicated. https://imgur.com/DTPnF8w |
been going through the bits i do have...
face plate :banana: https://imgur.com/pNFiw9d speaker. https://imgur.com/XkgFHPS inner part of broken coil :( https://imgur.com/txoI21P outer https://imgur.com/issovqc I may or may not have the knobs someplace in the shed, unsure if not, I'm sure i can find SOMETHING to work on it at a future date |
I'd track down a replacement coil. Life is too short and plenty of rough cabinet 630s get scrapped for CRTs....Someone will have the part.
Aside from that, you are a fairly tedious recap (trust me I've done 2.3 recaps of RCA sets in this family and there is another waiting a turn on my bench), and possibly some power resistors and troubleshooting away from a working chassis. You can get lucky and have it work after just caps....Heck one of the later ones IIRC an 8TK29 console that came into my hands was still going on the radio and had a working TV till the vertical collapsed on the previous owner...Cabinet was in lousy shape so I changed just enough caps and parts for it to work and sold it (thus the 0.3 recap count). Another option if you know a cabinet maker is to have a custom cabinet made for it in whatever furniture style you fancy....Heck if you reverse the yoke leads you could have a mirror in lid set with a faux pre-WWII looking cabinet. If it has enough sentimental value to restore, but no cabinet the only limits to the cosmetics are your imagination, resources, and styling sensibilities. |
So I guess it was normal for a TV then to have a 12 inch CRT behind a window that was 7.5 inch by 10 :o
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That was before the mandate that screen size be viewable area as opposed to the physical dimensions of the picture tube. The round tube also cuts off the sides of the picture anyway, so the window was likely designed with that in mind, so you wouldn't be able to see the picture curving off the edge of the crt face.
As for an enclosure, I was thinking about this for one of my sets... how about making a simple plexiglass box for it, mount the Fada face plate on that, then it'll be like a cool display unit, where you can see the tubes and everything inside. |
MadMan-. You stole the words out of my mouth. A wood based and plexiglass sided cabinet would be rather easy, for most anyone, to construct. It would make a fine little show piece. There's a lot of orphaned chassis out there, it's a shame to hide them away forever. Quite a few of us see the beauty, or are just amazed by viewing, these antique electrical Marvel's :)
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This guy built a Plexiglas cabinet for his Pilot TV-37 tabletop set:
http://www.electronixandmore.com/res...lot/index.html Regards, Phil Nelson Phil's Old Radios https://antiqueradio.org/index.html |
No matter what, this won't be easy, it's been sitting since the 70s gathering dust, the neglect, and broken coil, working out how to debug it w/o a enclosure.
The SAMS says the tube is a 12LP4, though I can't see any numbers on the tube, but it IS an rca, the schematic for the RCA 630 shows a EM ion trap, the one for the FADA 895 does not. I don't know if the SAMS is wrong, sams photofact "74-3" and it DOES have a EM ion trap, or it has a pm one and I did not see it, (did not look very close ), or it's lost over the years. If lost, that is yet another thing I'd have to find for it :( |
According to Riders your 895 combo chassis originally used a 12LP4 and a PM Ion trap. Your model number picture shows the CRT socket wires have been snipped off, as if someone needed a socket in a hurry. :scratch2:
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If you need a CRT socket I can send you one for postage and whatever it's worth to you...I have plenty of spares for that generation of socket. |
There's surely no need for a cabinet to do the chassis restoration work, considering you need the chassis out on the bench. What would be handy is a 5AP4 or 8AP4 test CRT. The CRT would have originally been installed through the front of the cabinet, like on an RCA 630.
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If you wanted you could set the bare chassis on top of a spare fridge in a garage or basement where looks don't matter and it's high enough that kids can't reach it, and as long as no one tries to stack bags of chips on it (honey why do I smell plastic, potatoes and grease burning? :D ) it could be the fridge TV. |
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https://imgur.com/fE1UWZA My children... I will have to search my shed one cool day to see if the Ion trap ( and knobs ) are around someplace. I hope they are. I got so much stuff, not sure what all is in there, I got like 2 dynakit mark ii s , a sansui 1000. several barco data projectors . |
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Cute cats. We used to feed a stray called Charlie that looked just like the big one. Our calico hated him and all other cats passionately. |
I just so happen to have Sam's #74 set. It says 10BP4 everywhere until you look at the tube list, where it says 10BP4 in models TV-30, 799, 899 and 12LP4 in 930 and 940. Note that 895 is not listed. Sam's website calls for 74-3 anyway. I can't imagine it's much different though. I'd imagine the 895 is the combo unit version, which the model label on yours agrees with. Likely it either has provision for audio input, or lacks the final audio stage because it would be in the radio chassis.
You already mentioned that it might've been in a custom enclosure in a bar, right? Maybe someone got a little crazy and changed the crt to the bigger option (which would make sense for public viewing). Or, hey, maybe the crt took a dump at some point and they replaced it with a bigger one. Either way, that front cover might actually be for the 10" version, maybe that's why it seems so small. Cuz 895 is much closer to 899 than 930/40. idk |
Ion control...
https://imgur.com/r3Yt9S5 is this the sort of thing I'm looking for? Funny, every time I see “Ion trap” I tend to think about the big Ion Cannon from empire strikes back. :p |
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'Ion trap' is sort of a misnomer anyway, isn't it? As I understood it, the ions and electrons are shot off at an angle, and the ion trap magnet straightens out the electron beam only and not the ions.
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On another starwars note, when I was a kid in the 90s after killing (at 2-4 years old because I wanted to know why sound came on instantly but picture took time) the 70s Quasar WID color some of my first memories are of watching, and trying for years to convince my folks to let me take it apart at something like age 10 I dismantled it and later smashed the CRT (my friends and I wanted to watch ourselves on TV) and ended up keeping the electron gun because it resmebled a light saber... I still have it all these years later. |
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And Yes Luke shot first in the Canteen! :thmbsp::yes: |
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Don't you mean Han Solo? :D We used to pretend that fluorescent tubes were light sabers... Now that I found a trap (not the original :( ) , and as mentioned, once I pull out and finish the CTC-90, it will be time to play with this monster, and first off, trying to work out how to safely (temp?) mount the CRT for the testing. |
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the closest thing I can find, so far is a 8KP4 at the ETF, same general wiring and biasing, & it won't roll off the table, :D the only major dif, is electrostatic vs magnetic focus, & that most likely wont matter for repair. |
https://imgur.com/NqVsScT
Ready Ion control... Yes that is silicon on the pin-cap. :( it was damaged over the years with all the moving, but still checks out very strong. |
I found it!! i found it! i found everything!!! :banana:
I had little hope that all the hardware was still there from the TV over the years and all the moves, that I went so far as to go a get an ion trap that I saw on e-bay. but today when i was looking in my shed . https://imgur.com/pKlbRDW I got very lucky. al the hardware is still there!! ;) |
Sweet!
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When I do ever get this working, is to try and build a larger size cabinet for it, out of wood mostly, birch plywood, finished to match the CRT surround I have.
The electronics / CRT chamber on top, will have an clear plexyglass top, so the guts can be seen from above when running, below it will be the speaker chamber, for the 8 inch Jensen that was with it, which still seems to be good. :) I don't know how tall it will be when all is said and done, will have to work that out later. I WILL BE putting cooling fans in it though! |
test CRT came today, a used 8YP4 ( from ETF)
https://imgur.com/5rxArRx https://imgur.com/BjSCvw5 https://imgur.com/dBZlbdD cute little thing! :D minor scratches and screen burn, worth it, over all. NOW I got to come up with some sort of socket to hook up to it. the socket to my 12lp4 is damaged, ad i was going to replace it anyway, I see out there that they had adapters to hook this sort of thing up to it, I could wire up a socket for the 8YP4 temp, but I am not sure what to get to start with. what do I look for that will plug on to this thing? |
i know what it should look like.
bk-precision_cr-11 https://elektrotanya.com/PREVIEWS/38...r_sm.pdf_1.png i should be able to get that socket someplace ... edit, ALMOST, but not quite. the pins don't match up :( https://www.ebay.com/itm/Vintage-7-p...-/123774257767 |
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