Rear Projector High Voltage Safety

[GeorgeLG]

I am experienced in electronic design and repair, including high voltage tubes (500v) but I will be getting into my first failed television which is a rear projector. I see a lot of info on discharging the tube in a front view CRT but nothing on how to safely discharge the HV in a rear projector with the three CRT guns. Can somebody please point me in the right direction to learn how to safely work on my television (WS-65905)?

Thank you,

George

[R_J]

Re: Rear Projector High Voltage Safety

There should be no need to discharge the crt's There anode caps are sealed with silicon to prevent arcing. If you need to remove the anode leads from the high voltage splitter, you can unplug them and short the anode lead to crt ground being careful not to touch the end of the lead.
In most cases you should not need to remove them.
What is the problem with the ptv? likely a convergence problem.

[GeorgeLG]

Re: Rear Projector High Voltage Safety

Thanks.

For a few months now the video would get some horizontal black streaks through it and then the screen would go blank but the power on/off/remote function would still work so I still had some power supplies and logic. After being off for an hour it would go for another few weeks or months. I have not had time to deal before but its time now. Today when it went off something burned up and filled the room with burning wire/component smell. IOW the "blue smoke of shame". I have to go out of town so I cant look at it for a few days but the scene of the crime is going to be easy enough to find. I just won't know yet if that the cause or the effect until I start diagnosing it.


George