Ancestors

Toot

Written by Jamie Booth on 2024-12-03 at 17:51

I have some old CRT monitors that I would like repaired, but I've never worked with voltages like that. Everyone says don't do this if you don't know what you are doing. I like living and avoiding major injuries. How do I learn so I can do this safely? I don't have anyone who's done this to help me.

[#]retrocomputing

[#]repair

[#]CRTMonitors

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Descendants

Written by Linker3000 on 2024-12-03 at 18:16

@jamie Check out some vids and service manuals of CRT insides and repairs.

Understand which bits can bite, even after power down & how the functional blocks interconnect.

Avoid putting two hands inside the operating area to avoid an across the chest shock (hearts don't like that).

Search for your make/model number & "common faults".

Always ensure someone is around to come to your aid (no lone working)

An isolating transformer is wise, but not a solution to all risks.

If in doubt, don't.

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Written by F4GRX Sébastien on 2024-12-03 at 18:38

@linker3000 @jamie and if not in doubt, check twice.

Also remember that some heatsinks may have high voltages on them.

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Written by Linker3000 on 2024-12-03 at 19:05

@f4grx @jamie On Reddit there's r/tvrepair.

They'll start with the usual earnings, but are a friendly lot.

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Written by Dr David Mills on 2024-12-03 at 18:16

@jamie if you can get yourself an isolation transformer and power the devices through that when you work on them, you turn most but not all potential fatal shocks into ones that just hurt.

Might be worth dropping a comment into some of the repair groups. Expect a lot of comments along the lines of don't try if you don't know what you're doing. Those are pretty good advice to be honest.

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Written by Laberpferd on 2024-12-03 at 19:07

@Dtl @jamie

TV service was my past profession and still is my hobby, so im happy to help you with everything

But please let me say i do have also personal burnout so my answers might be slower and more sparse than i wish (also translating into english is not that easy for me)

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Written by Rue Mohr on 2024-12-03 at 21:03

@jamie making an anode discharge stick is a good start. Also a discharge resistor for the mains cap (170vdc) (or 350 depending on your mains voltage)

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