Oppinions on dealing with a 3DS3 HV rectifier

[rrrhre2s]

The original socket did not have a resistor in the filament circuit but had a choke going to the CRT anode. The original socket had some gray anti-corona dope in the base of the socket that would eat the terminals up.

Replaced many of the sockets because of corrosion and or arcing.

I used to do about 15 of these sets a week in high humidity areas because the excessive HV caused arcing and failure of the HV rectifier socket.

There is a HV hold down diode some sets had 2, that fails quite often as well as the HV adjust potentiometer. Will cause the HV not to regulate check it with a black screen if the HV is excessive they will have to be replaced. They used a special silicon diode to replace the seleniums (Boost Diode) that were originally used it was rated at 2400v. (I don't know where one could be obtained today but haven't looked)

Wash your hands when handling that 3DS3 that is a lead coating that turns whitish and is toxic.

There is a 39k 1/2w resistor at the front of the printed circuit board (under the CRT high voltage cage side) that causes the horizontal to roll sideways (loss of phase control) replace it with a 1w resistor.

Any 2w carbon composition resistor is subject to be bad just for being there, changed most of them to metal film.

Weak snowy picture can be a bad filter capacitor in the power supply sometimes.

Those sets had a good picture when working properly but keeping them that way was difficult without knowing all of their ins and outs.

Made a lot of money working on these sets when they were current.

They built a 23" model with a very similar chassis.

rrrhre2s