What year is this Zenith?

[DavGoodlin]

It looks like a 1971 model B4523DE. Spanish name for the model, I even have the brochure. I have in my attic this same one that my parents bought new. The yellow cataract first appeared in 1982, but now we know it can be dealt with.

This was definitely a value model: 23V CRT, 12 tubes, 14 SS devices in the IF, Y-amps and color IC, A.K.A. the better "Titan 100" chassis (12B14C52) with a barely-wood cabinet of indeterminable style.

Mine needs the VDR replaced in the HV regulator circuit, some blue convergence resistors/pots and some general TLC. It was used regularly for 14 years and repaired only twice before being retired to my old room, then I "rescued it" when the folks moved.

IIRC Zenith had an all-SS chassis this year, 40BC50?

[Electronic M]

Originally Posted by DavGoodlin

It looks like a 1971 model B4523DE. Spanish name for the model, I even have the brochure. I have in my attic this same one that my parents bought new. The yellow cataract first appeared in 1982, but now we know it can be dealt with.

This was definitely a value model: 23V CRT, 12 tubes, 14 SS devices in the IF, Y-amps and color IC, A.K.A. the better "Titan 100" chassis (12B14C52) with a barely-wood cabinet of indeterminable style.

Mine needs the VDR replaced in the HV regulator circuit, some blue convergence resistors/pots and some general TLC. It was used regularly for 14 years and repaired only twice before being retired to my old room, then I "rescued it" when the folks moved.

IIRC Zenith had an all-SS chassis this year, 40BC50?

The first all SS Zenith color chassis that wasn't recalled was the 25DC56/58... There was one before that IIRC the prior year (so ##CC##) that seems to have experienced a total recall... Zenith even advised tossing the service manual for that chassis. Doug Harland has a thread on the lost Zenith SS color.

There was a 20BC50 and 20CC50 that were high tube count low, transistor count hybrids. I have the chassis for both (the B year is parts the C is a working metal table model)...The only difference between the two is that the chassis mount chroma IC is a 9-pin tube socketed part on the B and a dip on the C.