Hi,
I have an old Zenith console radio, the only markings are on the back on the tube location chart, chassis #1281. I would appreciate model info and schematic availability. Thanks!!!

: Hi,
: I have an old Zenith console radio, the only markings are on the back on the tube location chart, chassis #1281. I would appreciate model info and schematic availability. Thanks!!!

Hi Rod

Any chance the chassis number is 12A1? The 12A1 is a 12 tube radio used in model numbers: 12S550Z, 12S568Z, 12S569E and 12S569Z.

Norm

: : Hi,
: : I have an old Zenith console radio, the only markings are on the back on the tube location chart, chassis #1281. I would appreciate model info and schematic availability. Thanks!!!

: Hi Rod

: Any chance the chassis number is 12A1? The 12A1 is a 12 tube radio used in model numbers: 12S550Z, 12S568Z, 12S569E and 12S569Z.

: Norm

12B1 is also a possibility. A 12 tube Zenith used in models: 12H650, 12H670 and 12H671.

The chassis number looks like 1281, but it has 12 tubes, one of which was bad, a 7C7.
Another guy had suggested it was a 12B2, but that is a phonograph unit.
While I got you here, what is your opinion of replacing paper/wax caps with orange
drops?
I appreciate your time and efforts! Thanks!

: The chassis number looks like 1281, but it has 12 tubes, one of which was bad, a 7C7.
: Another guy had suggested it was a 12B2, but that is a phonograph unit.
: While I got you here, what is your opinion of replacing paper/wax caps with orange
: drops?
: I appreciate your time and efforts! Thanks!

Rod

Both the 12B1 and 12B2 chassis have 3 - 7C7's. I mentioned 12B1 since you asked about 1281, the B could look like an 8.

Orange drop caps are very good quality. If you are only changing some caps it's best to replace the ones with high voltage across them. Be sure to replace plate to grid coupling caps.

Norm

Hey Norm the radio has the following tubes:
3-7C7, 1-7A6, 1-7B6, 1-7A4, 1-7S7, 2-6V6, 2-6SD7-et} 1-5X4C 12-Tube's.

Thanks again for the help!

Rod

: Hey Norm the radio has the following tubes:
: 3-7C7, 1-7A6, 1-7B6, 1-7A4, 1-7S7, 2-6V6, 2-6SD7-et} 1-5X4C 12-Tube's.

: Thanks again for the help!

: Rod

Hi Rod

You have a 12B1.. The 12B2 has 2 different tubes 7N7 and 7F7.

Norm

One last thing...any chance of a schematic? Thanks!

: One last thing...any chance of a schematic? Thanks!

Rod

See my comments on the other forum..

Norm

: One last thing...any chance of a schematic? Thanks!

: Norm
i have a nice Zenith model B600 Wave Magnet that doesn't work, turn the switch on the tubes light up and some times hums if you touch the antenna ,i heard one an station on it and that was the last time.can you stear me in the right direction on what may be happening. and are there any schamatics out thre for this Trans Oceanic.
thanks

N3fzp
zed

: Norm
I have a nice Zenith model B600 Wave Magnet that doesn't work, turn the switch on the tubes light up and some times it hums if you touch the antenna ,i heard one station on it and that was the last time.can you stear me in the right direction on what may be happening. and are there any schamatics out there for this Trans Oceanic.(Chassia 6A40)
thanks

N3fzp
zed

: Hey Norm the radio has the following tubes:
: 3-7C7, 1-7A6, 1-7B6, 1-7A4, 1-7S7, 2-6V6, 2-6SD7-et} 1-5X4C 12-Tube's.

: Thanks again for the help!

: Rod