Main > Monitor/Video Forum
Arcade monitor isolation transformer.
bobbyb13:
--- Quote from: behrmr on March 21, 2020, 11:46:43 pm ---
--- Quote from: abispac on March 21, 2020, 08:09:36 pm ---
--- Quote from: behrmr on March 21, 2020, 11:50:34 am ---You can just look at an arcade CRT monitor and tell if it needs an iso. If there's a larger transformer mounted to the chassis then it has it's own switching power supply and doesn't need an ISO. Also the ones that don't need an ISO very often have a 3 prong power connector, not two.
--- End quote ---
This is what i mean, if you look at this chinese chassis, they dont have a large transformer built in, neither they have 3 prong cord, and they always get connected to the wall without an iso, thats a popular thing to do. Now the monitor im trying to use, it lasted 3 minutes without the iso, so acording to lilshawn , i should be ok, once the chassis had been repaired, right?
--- End quote ---
As long as you use an ISO you’ll be ok
--- End quote ---
I thought the same was true and nearly killed my switch mode power supply type monitor (because it can't draw enough power through an ISO at times apparently.)
It was saved by heeding lilshawn's advice in fact.
I'm a noob and have no idea what I'm looking at with monitor chassis and mine I refer to had no AC plug connector when I got it either- just three 12g wires.
Unless we are talking about parts you don't mind blowing up, I would say better to know for sure based on the logic of someone familiar specifically with what you are using.
Bobby
abispac:
Where can i find such "iso" on a regular everyday item, a fridge? my local electronic estore dont sell those...
bobbyb13:
As we say in my neighborhood...
Try look-
https://www.ebay.com/itm/Isolation-Transformer-UL-Listed/382661903326?hash=item59186d43de:g:Uo8AAOSwhrpcCsVA
Bobby
Zebidee:
I have one of those monitors - it is based on a Wei-ya design, can't remember the exact model but maybe 1820. Will have a look and confirm later.
It definitely needs an isolation transformer (not some substandard ---steaming pile of meadow muffin--- one either) and 110v.
I run mine with an ISO and yes, it does get pretty warm. Not too warm though. Nothing blown up so far.
EDIT: Yeah a Wei-ya 1829HR 19 inch chassis, or near enough. I've attached right schematic for it.
abispac:
--- Quote from: Zebidee on March 24, 2020, 06:47:39 am ---I have one of those monitors - it is based on a Wei-ya design, can't remember the exact model but maybe 1820. Will have a look and confirm later.
It definitely needs an isolation transformer (not some substandard ---steaming pile of meadow muffin--- one either) and 110v.
I run mine with an ISO and yes, it does get pretty warm. Not too warm though. Nothing blown up so far.
EDIT: Yeah a Wei-ya 1829HR 19 inch chassis, or near enough. I've attached right schematic for it.
--- End quote ---
Sorry for the confusion, the chassis on the picture, the wei yah clone, it was just to show an example on the type of chassis's here locally they use all the time with some xbox or multigames cabinets, they dont use an iso and they last years without them, the actual 19in im trying to use, and the one i know it used an iso, (i just happened to get rid of it out of ignorance) its on the shop getting some parts replaced to make it work again. NOW my confussion is, lilsahw told me (and as english is my second lenguage i may misunderstood) some chassis need and iso and some dont, basically i understood that if you chassis blows up right away, then yes, you need and iso, if it dosnt blow up, then maybe you dont, since i want to be safe i want to get one, but not from ebay, ill probably go to the scrapyard to see if i can get me one. thanks for the help.