those who have worked on CRT AC/Main circuits: has anyone ever successfully converted a 240V UK monitor to 120V US? is this even possible?
scenario: about 15 years ago, an incredibly gracious person from the UK sent me their Amstrad PC/2086. both the PC and the monitor are wired for 240V, and appear to use non-switching PSUs.
rebuilding the PC to use a standard north american AT PSU is simple, and takes about 10 minutes.
the monitor, on the other hand, is unexplored territory for me. I've never worked on the input side of a CRT before. i've done plenty of flyback and cap replacements, but never anything to the AC circuit.
any amount of thinking out loud from people who have direct experience with the HV side of the circuit would be appreciated!
@vga256 Yeah, that's why I say somebody more clever will have to tell you what exactly needs swapping :/
Alternatively, you can get an AC-AC brick to plug in between the wall and the device. I've got one that plugs into the UK wall socket and gives me a 120v US-style AC plug. Works really well with a couple of old computers.
@billgoats@vga256
One thing to watch out with these transformers is staying within their power limits (+ some headroom). Otherwise they like to get warm and melt.
Add up the rated watts of the monitor and computer eg. 250W.
For that much power you’ll need a step transformer rated for over 250W (or 250VA).
those with extensive CRT repair experience (edit: please, for the love of sweet jebus, don't reply if you are just guessing and haven't worked on a tube)
i picked up this Sony KV-8AD11 a while ago and it has been sitting on the repair pile. while i've recapped and restored a couple of dozen arcade & tube tv's, diagnosis isn't my strong suit.
what's causing the green hue running along the left side? it remains there even after the chassis has warmed up, and switching between RF and composite input makes no difference.
interestingly, the green hue does not show up on snow/static screens. is this something adjustable via the internal potentiometers, or will it require some PCB work?
The quest to understand why my #NEC MultiSync 3D is all screwed up begins! First is this odd section of greasy dampness on the bottom board. Did it come from the power supply? Did it come from the neckboard? Neither? Both? #retrocomputing#crt#crtrepair
I bought a Sony Jackal 300 TV/radio/tape player. Most of this won't work outside of Japan, but that hasn't stopped me in the past. #crt#crtrepair#retrotv