Some Eastern-Europe sets

[NowhereMan 1966]

Originally Posted by yagosaga

Hi,

there was an ad on a collector's board: Raduga for free. I asked another collector to collect it for me.

The secondary coil of the flyback is bad. See photo.

When I was on a visit in East Germany in 1980, the first time I saw this Raduga tv set in a radio and tv shop. I wondered why this Sovjet tv set has a purple picture. The other brands reporduced correct colors. But these Sovjet tv sets had purple screens.

Today I get the answer. Because the Raduga tv sets have a tint control! It is just the same tint control like I knew from NTSC color tv sets. The Raduga is a SECAM tv set with a tint control. It is fascinating.

In the next weeks I will get another Sovjet color tv set, the Rubin. It is also in good condition, but it is missing the back.

Kind regards,
Eckhard

I've heard stories that in Cuba, they imported Soviet made TV's for the NTSC standard. I don't think that's why the Raduga has a tint control in the first place, but maybe it is.

[Kiwick]

Sadly, Raduga sets weren't sold in Italy (mainly because they were SECAM and we had PAL)

But we got the "videopocket" a Russian 5" B/W portable, it was made from the mid 70s all the way into the 90s, it's incredibly well built and, of course, also very heavy...

[fsjonsey]

The construction of soviet electronics seems like a strange cross between european and Pre-War American construction styles. I have a hunch this has a lot to do with the lend-lease program we had with them during WWII. The soviets even shared tube designations with the US until the 50's.

[fsjonsey]

Originally Posted by NowhereMan 1966

I've heard stories that in Cuba, they imported Soviet made TV's for the NTSC standard. I don't think that's why the Raduga has a tint control in the first place, but maybe it is.

They sure did, and most had the tuners sensitivity intentionally crippled so that they could only receive local broadcasts, and not ones beamed from high power directional stations in Miami.

[yagosaga]

Originally Posted by fsjonsey

The construction of soviet electronics seems like a strange cross between european and Pre-War American construction styles.

This might be IMHO correct. The Raduga is more an American tv set than a European set. Large mains transformer and shunt regulator are typical American.

The entire cabinet is made of massive wood, no flake board with veneer like all other color tv sets over here.

Here are the recent screenshots. There is still a lot of to do.

- Eckhard

[yagosaga]

Meanwhile I have adjusted the SECAM decoder. I still have a fault in the flipflop which switch and change the delayed and the actual color channels. But the picture quality is much better than before.

BTW: the Raduga-706 was introduced in 1977 and was produced even in the 1980s. I believe this was the last hybrid color tv set in the world.

[Telecolor 3007]

The last color hybrid in U.S.S.R was manufactured in 1984!

[yagosaga]

Originally Posted by yagosaga

Meanwhile I have adjusted the SECAM decoder. I still have a fault in the flipflop which switch and change the delayed and the actual color channels. But the picture quality is much better than before.

The flipflop is OK. I checked it with the scope. But I found that the delayed SECAM channel had no signal. I retracked the color signal and found that the SECAM delay line was not working. I replaced it with a PAL delay line. Now, I get pretty colors with this set.

Note that the convergence here is the best what I can get. The transductor does not bring the full adequate currents for a proper convergence.

- Eckhard