Zenith "coffin"

[nasadowsk]

look in the compartment up front where the controls are. There SHOULD be 2 phillips screws. Remove the knobs, remove those two screws. The box unhooks in back from the bezel! The power/volume knob is (2) 1/4 inch screws. The speaker unplugs from the chassis. as does the convergence and tuner. Watch the HV suction cup! Unplug the yoke wires, and the chassis should ease out.

If it's like my 25LC20, the controls box can be hooked onto the front of the chassis and secured with a screw to hold it in there so it doesn't flop around.

Just look it over carefully, and it's pretty obvious once you do it the first time.

[dieseljeep]

Originally Posted by nasadowsk

look in the compartment up front where the controls are. There SHOULD be 2 phillips screws. Remove the knobs, remove those two screws. The box unhooks in back from the bezel! The power/volume knob is (2) 1/4 inch screws. The speaker unplugs from the chassis. as does the convergence and tuner. Watch the HV suction cup! Unplug the yoke wires, and the chassis should ease out.

If it's like my 25LC20, the controls box can be hooked onto the front of the chassis and secured with a screw to hold it in there so it doesn't flop around.

Just look it over carefully, and it's pretty obvious once you do it the first time.

It must be 30 years ago, since I pulled the chassis from one of those. I'd probably remember the proceedure.
BTW, looking over the entries on this thread, we haven't heard from Electronic Memory in a long time. He must be taking his College education seriously.
For a young man, he seemed to be well versed.

[Penthode]

Glad you are working on the coffin again.

I am still curious about the tube and how all three filaments would simultaneously open. Perhaps a bad internal weld? My thought was perhaps a bad solder joint at the socket. Did you further investigate this?

I assume you must have ascertained the tube to be bad?

[old_tv_nut]

Originally Posted by Penthode

Glad you are working on the coffin again.

I am still curious about the tube and how all three filaments would simultaneously open. Perhaps a bad internal weld? My thought was perhaps a bad solder joint at the socket. Did you further investigate this?

I assume you must have ascertained the tube to be bad?

I remember your question about the filaments and will retest to see if I can find out what's what.