Pentranic Monitor

[fredster]

I am switching montiors from a broken Pentranic to a G07. I can't find a model number on the monitor, but it's old and it's a 19" with an orion picture tube mounted horizontal.

Does anybody know what kind of power the Pentranic takes? 100V or 120V? I think nintendo used them, so are they positive or negative sync?  There's some kind of cap on the converter, and I'm not sure what that is.

It had RGBGndSync all in a row, but I can't seem to find a manual for it.  

If anybody knows where the manual lies on the great www, that's cool.

[Ken Layton]

Try www.pentranic.com as they have some schematics on their site.

[fredster]

I tried that, the link is dead.
I wanted to know input voltage and if it's positive sync.  Anybody know that ?  I think it was for an old Nintendo cocktail, likely DK.  Somebody converted it to Arkanoid a long time ago.   Did a good job, real pro job, but Now I want to change out the monitor.

[Ken Layton]

Weird. That was Pentranic's home page and it worked a couple of months ago. Anyway, Pentranic is a relative newcomer (compared to other monitor makers) to arcade monitors in the USA from what I understand. I have a schematic saved on my hard drive for the 1100 & 1300 Pentranic. It uses a switching regulator power supply and does not need an isolation transformer. It operates on 90 to 240 volts AC. It used composite negative sync or there was also an optional seperate h/v sync input board.

Electrohome runs on 120 vac and requires an isolation transformer. Electrohome will also accept composite or seperate sync, positive or negative. Check your cabinets voltage going to the monitor and check to see if an isolation transformer is still in it.

[Jomac]

The old monitor with the 19" Orion tube was more than likely a standard 15k Orion chassis , if it was running arkanoid it will be negative comp sync for sure.

The only Pentranic I have seen that will accept freevoltage 90~265v is the dual res 15 / 24K types CH-288  ( the ones mentioned by Ken ) , all the rest I have seen were 110v .
I normally tell people to look at the main filter Cap ( the biggest one in the power supply ) the 110v versions used a 200v cap and the freevoltage ones have a 400v cap.