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Author Topic: Help with Amiga 1080 monitor  (Read 2656 times)

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Offline paul1981

Re: Help with Amiga 1080 monitor
« on: February 28, 2017, 12:09:53 PM »
It looks like a support for a video connector or such, despite there not being one. Actually, I've changed my mind - it looks like it could just be a case support for the rear right side. Have a look in the photo I found; you will see it screws to the top of the line output transformer (black thing on right side). Bear in mind there are lethal voltages inside a tv and monitor even with the power off. Don't touch the tube! Don't touch anything! The only thing you'll want to touch if needed would be the focus knob with a flat blade screwdriver (plastic to be safe) on the back of that transformer to get a crisper picture if need be. You'll need a big mirror though as you're dicing with death if you try and reach around it with your arms to adjust it whilst looking directly at the screen. Don't risk it, use a mirror.



Ref:
http://www.oldcomputr.com/commodore-amiga-1000-1985/
« Last Edit: February 28, 2017, 12:21:31 PM by paul1981 »
 

Offline paul1981

Re: Help with Amiga 1080 monitor
« Reply #1 on: February 28, 2017, 02:40:35 PM »
Quote from: walterg74;822826
Thanks Paul!

That seems to be exactly it!  Given the circumstances though, and the fact that it does not really do much, i guess I will consider just leaving it out, at least fot now.

I did see the two knobs there, but not sure what they are for. I am a bit dissapointed with the vertical height, which it were a simpler knob, and the lack of a horizontal equivalente, and of a vertical position too.
A weird thing I experienced is I'll get the workbench correctly alligned when it loads (from CF) and centered, and when I launch a game it's shifted a little to the right...


Some games are off centre in either or both directions which is obviously down to the programmer of the game. To correctly set up your monitor for your Amiga (any Amiga) you should just have a standard Workbench screen open and make sure your overscan/screenmode settings are both set to default and PAL (or NTSC if you live in those parts and intend to run NTSC games). This is your reference - Workbench default settings...before anyone mucks about with overscan or screen position. Then adjust your monitor settings to match that. Or, open Deluxe paint in 320x256 or 640x256 (again, Workbench overscan and screenmode prefs MUST be default here) and fill the whole screen with a mid grey and then adjust, or draw a white border or something. Or, use a test pattern generator program (some on aminet) or test image. You should leave some gap though to account for overscan, which many games use along with graphics/video utilities.

If you don't have certain controls on your monitor, then they will be on the circuit board somewhere and there will be pots to adjust. Again, all very dangerous working on live equipment and I don't recommend it to be honest. The other knob on the back of the LOPT/transformer will be the screen voltage. No need to touch this, but if you do don't worry just put it back to where it was. Again, CRT monitors / tv's are extremely dangerous with their thousands upon thousands of VOLTS. Don't take any risks, it can easily kill you.