If that television with 25LK1C Chromatron went into production and not a engineering prototype, would make an interesting addition to Chromatron history. Still very interesting.

The first link failed to open but I opened the second link.

Be very patient. That link took several minutes to open for me, but it is there.

On Safari browser: Can not download file.
On Firefox browser: DJVU File, you need to download a file software for unrecognized file extension.

I downloaded DJVU viewer and opened file. Is there anything worth translating? Do you know if it went into production?

Hi again.

I searched and asked from my co-members at elfafoorum if they know anything about this TV-set. It seems that this was quite small special edition made for deputates of the General Secretary of the Central Committee of the Communist Party of the Soviet Union celebrating 60-th year of Oktober Revolution.

TV set was made using "foreign" parts, as the russians didn't had enough small colour decoder and other blocks on discrete elements to fit into this cabinet (normal size TV-sets had SECAM-decoders with several tubes at that time). Called Aurora (Аврора in cyrillic), but Aurora is also a common B/W set, so web-searching founds them. There are 10 or even less answers on Internet about that chromatron, so sadly nothing more.

Hi all, first time posting here! Sorry if reviving this thread is frowned upon, it just seemed like keeping all the Indextron VF info in one place made the most sense to me from a reference standpoint.

I'm yet another weirdo looking to use the viewfinder in the RCA CKC021 as a standalone monitor. I've got it all hooked up and such but I can't seem to get the color indexing portion to work correctly. It's all weird color confetti, all the time, and making the adjustments written in the service manual solves nothing, sadly.

I've been measuring voltages listed on the schematic, and I'm wondering if my version of the service manual is either old or incorrect, or if there's something broken on the board.

In the attached image of the schematic of the EVF Process I board (page 8-59 of the service manual), pin 18 of IC1701 should be 4.9V, connected to the right output of the 2.7MHz bandpass filter. However, on my board, pin 18 shares continuity with ground. I'm not sure if the BPF is broken, or if the schematic is incorrect. If anyone else has a CKC021 VF and could verify what voltage is supposed to be on that pin, I'd greatly appreciate it!

Also, wow, that pink Sharp model! I must have it!!

I believe that the voltage shown on the schematic for pin 18 is incorrect. I measure close to zero... the only pin in that section (13-19) with much measurable voltage is pin 14, with about 4.8 volts.

jr

Well dang, there goes my primary troubleshooting avenue ;)
Thanks for checking it out on yours

Another thing I'm noticing is that a lot of the signals shown in the oscilloscope screenshots are reading way low on my scope. Like the signal shape and frequency looks correct but the amplitude is often 10x lower than the service manual states. Like a signal that the manual says should be 0.2v p-p reads 20mV p-p on my scopes.

Are you using a 1x or 10X scope probe?

1x, is the manual screenshots done with a 10x?

10x attenuates signal by a factor of 10...They say 10x so that you remember to multiply your reading by 10 so it is accurate.

y'know I checked my probe before I started probing. Just checked it again, sure enough the little switch was on 10x... must have slipped while contorting my hand to hold the probe on some pin at some point. Today has not been going my way so far lol

I found this site on Indextron.I'm surprised they did not go with the Panasonic CT-101 CRT tube in the VF.Maybe because there was to much electronics to cram into the VF shell.


http://www.visions4.net/journal/time...e-a/indextron/

heh that's etype2's site, as seen in other posts in this thread