commodore 1942 monitor

[redblade]

Hi.

I own a commodore 1942 monitor which seems to have a VGA input cable.

I saw on www.trademe.co.nz a commodore 1940 monitor which seems to come with the standard Amiga Video cable??

Does this mean that if I goto my local electronics store buy the plugs + wire and solder the connections so I have a shotty amiga video cable -> vga adapter, that the commodore 1942 monitor will work?

Or do I need the scan doubler?!?.

It's just that my current Amiga screen is broken (I think it's like the 4th one I've had).

[manicx]

The 1940 and 1942 monitor are nearly the same. The later has a better dot pitch (.39 vs .28 if my memory serves me well) and can disaplay some 800*600 resolutions of the AGA Amigas.

[keropi]

get a scandoubler/flickerfixer and use a svga monitor.... way better than native amiga ones...

[redblade]

Hi Thanks for you replies.

But both don't seem to answer my question

[Unknown_K]

http://www.amiga-hardware.com/manuals/19401942man.lha

The manual for that monitor is linked to above.

From what I read at http://www.amiga-hardware.com/ the monitor will sync to Amiga NTSC modes so if you get a VGA to Amiga cable/converter made it will work with whatever Amiga you have.

[Methanoid]

Redblade, the answer is YES. You need the Silver 23 to 15 pin adaptor. I had one of these a while back (the monitor and adaptor)

[redblade]

cheers guys.

@unknown_K: I live in .nz so we use PAL here (Yay a extra 56lines )))

Cheers matey for the link to the manual, 08.jpg has the pinouts of the 15pin VGA plug .

@Methanoid: now to build my own 23 to 15 pin adaptor.

VGA PINouts. | to Amiga 23
01 Red | 03 Analog Red (75 Ohm)
02 Green | 04 Analog Green (75 Ohm)
03 Blue | 05 Analog Blue (75 Ohm)
04 n/c | n/c
05 Gnd | 20 Video Ground
06 Red Return (Red GND) | 16 Gnd ???
07 Green Return (Green GND) | 17 Gnd ???
08 Blue Return (Blue GND) | 18 Gnd ???
09 N/C | n/c
10 Digital Gnd | 13 GndRTN (Digital Gnd)
11 Digital Gnd | 13 GndRTN (Digital GND)
12 n/c | n/c
13 H.Sync | 11 Hsync
14 V.Sync | 12 Vsync
15 n/c | n/c

n/c = no connectioin

Amiga 23 cable pin outs from
http://pinouts.ru/data/AmigaVideo_pinout.shtml

Does the above seem correct ?!

How the hell do you preformat this shit!?!?

[Overdoc]

I think the original converter has some logic chip inside, too. If I remember correctly it is just there to make the way of a few signals longer for some reason.

Anyway, I built such an adapter without the logic chip to hook and Amiga to a NEC Multisync 3D monitor and it worked perfectly

Just get both connectors and a flat cable like is used for a diskdrive or hd and solder the right pins together. You need R,G,B analogue, H-sync, V-sync and solder all ground pins together.

[Unknown_K]

Some model Amiga 1200's (like my 1D4) have screwed up video with a direct cable (there is a mod for it I have not done yet). I used the silver Commodore brand converter and it fixed the problem on my NEC 3ds.

I still have the original cable I purchased, and did see another NEC 3ds monitor locally, I might end up buying it as a spare.

[redblade]

reply thanks.

I think I've got some floppy cable somewhere .

[Chain]

Originally Posted by redblade

reply thanks.

I think I've got some floppy cable somewhere .

some monitors neends reverse syncing signal, so some adapters have ttl inverter inside. If it works without, you won

[redblade]

Originally Posted by Overdoc

I think the original converter has some logic chip inside, too. If I remember correctly it is just there to make the way of a few signals longer for some reason.

Anyway, I built such an adapter without the logic chip to hook and Amiga to a NEC Multisync 3D monitor and it worked perfectly

Just get both connectors and a flat cable like is used for a diskdrive or hd and solder the right pins together. You need R,G,B analogue, H-sync, V-sync and solder all ground pins together.

the GrouND pins ? are these all 6 of them?
05 GND
06 Red GND
07 Green GND
08 Blue GND
10 Digital GND
11 Digital GND

The monitor is a 1942 so I'm guessing it can DeSYNC back to 15KHZ that the 1980 models use.

[redblade]

tried the soldering as in msg 7 above, and sadly didn't work .
just got the black screen, no fuzzy lines or anything

now to wait for scan doubler (

[Jope]

If you're going to get a scandoubler anyway, sell the 1942 and get a real monitor. :-)

The 1942 is good if you connect it directly to the Amiga - it can display all AGA modes, but as a VGA/SVGA monitor it really really sucks.

[redblade]

I think i'll keep it. As it has audio for the Amiga.

[Jope]

As you wish.. But still, once you get the scandoubler, you no longer need the 1942, as you can use most SVGA monitors.

[Overdoc]

Hmm, did you connect all the GND pins on both sides ?
If I find my self-soldered adapter I can have a look how I soldered it together exactly.
I tried it with an A-500 on both my C= 1960 and NEC Multisync 3D monitors back then and it worked perfectly !

[redblade]

Yes I did solder all the GND pins to both sides.

I had to solder 10/11 on VGA to 13 on Amiga Video.

[Overdoc]

Well, I thaught about soldering all GND pins together on the Amiga side, then solder all GND pins together on the VGA side and then connect both with one ground cable.

Also, are you sure you have numbered the pins correctly ?
On the Amiga side they are numbered from left to right when you look into the Amigas socket ( = solder side on your connector )
On the VGA monitor's socket they are numbered from right to left - opposite direction than on the Amiga !

I will check my adapter when I get home tomorrow.

[redblade]

the sockets have the numbers near the pin.

So I was just soldering to the numbers I read on the socket.

But that idea of just soldering the GND pins to gether on the Amiga side and the GND pins on the VGA side then connecting them together sounds like a good idea, I should have done it first.

will be interested to find out the details of your adapter.