RGB not syncing on Commodore 1084 Monitor [SOLVED]

[Oldsmobile_Mike]

Read through this thread:

http://www.amiga.org/forums/archive/index.php/t-15907.html

You are not the first person to ask these questions.  

[commatari]

TTL RGB is what the early IBM PCs used, also the C= 128.


Here's a diagram to connect an Amiga to the 1084P. Would probably be best to connect all the grounds on the Amiga side together (pins 16 through 20).

http://raspinovca.ru/cocolevca/Amiga-to-C1084-Monitor-Cabl.gif

[CaelThunderwing]

edit: with teh pin fixed,  this has come back to life

[Dandy]

i just got in today a A500 Video RGB to 6Pin RGB cable i can see it in color but its not Syncing like Vhold or H-hold needs changing but the 1084 doesnt have any VC/H-hold knobs for adjusting :/

any way to correct this ? as i hope i didnt just waste 24$.

Hmmm - the standard way to connect an A500 to an 1082 or 1084 monitor here in Germany was via a cable with a 23 pin D-SUB plug on the one end and with an EuroSCART plug on the other end.

Never heard of the '6Pin RGB cable' you mention, but maybe such cables were used e.g. in the U.S. or other exotic countries...
:biglaugh: :p

[Oldsmobile_Mike]

Never heard of the '6Pin RGB cable' you mention, but maybe such cables were used e.g. in the U.S. or other exotic countries...
:biglaugh: :p

LOL. Never even seen a SCART cable or plug on this side of the pond. Older 1084's connect via 23-to-6 pin round connectors. Newer, less crappy 1084 models connect via a 23-to-9 pin D-sub connector.  Viva la standardization! :lol:

[UberFreak]

less crappy 1084 models connect via a 23-to-9 pin D-sub connector.

These "less crappy" 1084 die like flies, I have over 10 dead units here with dead flyback.

The older 1084 (with power button at the front) are real work-horses, never had an issue and I use them daily since the 80's (one was used as a bedroom TV for ~10 years).

[Oldsmobile_Mike]

These "less crappy" 1084 die like flies, I have over 10 dead units here with dead flyback.

The older 1084 (with power button at the front) are real work-horses, never had an issue and I use them daily since the 80's (one was used as a bedroom TV for ~10 years).

That power button "not clicking in" seems to be a problem on many of them that I've seen.  I've seen them kludged to stick in with all manner of contraptions.

The newer ones have stereo speakers and a "more modern" style.  Also I'm a fan of the DIN connector over the round one.  I guess to each their own, but IMHO none of 'em are much better than doorstops, hence why I have Indivisions in all my Amiga's.  :roflmao:

[Dandy]

LOL.
...
Newer, less crappy 1084 models connect via a 23-to-9 pin D-sub connector.  Viva la standardization!
 :lol:

Well, I even have an older model since 1989: the CBM 1081, which I altered to stereo sound myself.
Still in working condition...

[UberFreak]

All 1084 models suffer from crappy power-switches.
I recently bought some replacement switches but they seemed even lower quality than what C= used...

If "modern style" means power-switch at the back - no thanks, that's annoying to me
Never used the monitor built-in speaker, so don't really care if its mono or stereo. It sounds terrible either way!

I did try working with an LCD for the Amiga but quickly moved back to CRT, there's just no comparison in demos & games, IMO.
I'm currently using a 19" Viewsonic CRT which can handle 50Hz, picture looks great & there's zero motion-blur, which is something I noticed on all LCDs I tried.

[Oldsmobile_Mike]

I'm currently using a 19" Viewsonic CRT which can handle 50Hz, picture looks great & there's zero motion-blur, which is something I noticed on all LCDs I tried.

I just last night replaced my 37" TV on my A500 with a 50". You know, for games.  

Always hated 50Hz. Too flickery for my eyes. Back in the mid-'90s I had an A1200 that was a European import. Every time that I turned it on I would dutifully use the early startup menu to change it from PAL to NTSC (60Hz). I was thrilled when Euro36 screenmode came out.  What was that, 73Hz, and compatible with my 1084S-D1? Winner winner, chicken dinner!

That's the best thing about the Amiga, no two are ever alike. We've all customized them to exactly suit our needs. Cheers!

[Dandy]

All 1084 models suffer from crappy power-switches.
I recently bought some replacement switches but they seemed even lower quality than what C= used...

If "modern style" means power-switch at the back - no thanks, that's annoying to me

My A1200's monitor suffers from the same issue.
I overrode the switch and use a multiway connector with switch to switch my euqipment on or off instead.

Never used the monitor built-in speaker, so don't really care if its mono or stereo. It sounds terrible either way!

You are of course right regarding the sound quality.

But it was a good thing to have a stereo monitor when I visited my relatives in former East Germany back in early 1989, before the fall of the 'iron curtain'.
I took my A500 and the modified monitor with me and demonstrated the capabilities of an Amiga to all my cousins - and the stereo sound certainly was one of it's capabilities...
3 of them bought an Amiga after the fall of the wall...

Only very few East Germans had stereo equipments before the fall of the wall - most were on mono - even the discotheques.

I remember one popular discotheque in Magdeburg (Cafe Impro), where they used a 'manual lighting console' instead. That was a guy with a wooden plank and lots of pushbutton switches (connected to the different coloured lamps with lots of cables) on it, which he pushed with the beat of the music...

So I bought an assembly kit for an 'electronic 3-channel lighting console' for roughly 28 DM, put it together and donated it to my cousin, who was a DJ at the aforementioned Disco back then. That made him the first DJ with a 'electronic 3-channel lighting console' in Magdeburg...
:hammer:

I did try working with an LCD for the Amiga but quickly moved back to CRT, there's just no comparison in demos & games, IMO.
I'm currently using a 19" Viewsonic CRT which can handle 50Hz,

Able to handle 50Hz mains frequency or able to handle 50Hz display refresh rate?

picture looks great & there's zero motion-blur, which is something I noticed on all LCDs I tried.

That may depend on the phosphorous coating in the CRT. I have very well had CRT-TVs with a very high afterglow time and a lot of motion blur by that...

On computer screens I have not experienced 'motion blur', as I rarely use them for watching videos...

[UberFreak]

Able to handle 50Hz mains frequency or able to handle 50Hz display refresh rate?

Refresh rate, of course (I'm in PAL land so everything is 50Hz by default).
I found its quite rare for PC CRT monitors to support vertical refresh of 50Hz.
I also have a 17" MAG model which supports 50Hz, although its manual says the minimum supported is 59Hz.

What I couldn't find was a PC monitor with 15Khz horizontal refresh support, so I had to use a scan-doubler for that.

That may depend on the phosphorous coating in the CRT. I have very well had CRT-TVs with a very high afterglow time and a lot of motion blur by that...

Never seen CRTs with high-decay phosphors, although I know they existed.
It was just a silly idea really, can't imagine it being useful for TV watching or computer use which involves lots of motion, like games.

[Oldsmobile_Mike]

It was just a silly idea really, can't imagine it being useful for TV watching or computer use which involves lots of motion, like games.

*cough cough* Productivity software *cough cough*

Not everyone uses their computer just for watching TV and playing games, lol.  :lol:

http://www.bigbookofamigahardware.com/bboah/product.aspx?id=864

[Dandy]

...
Never seen CRTs with high-decay phosphors, although I know they existed.
It was just a silly idea really, can't imagine it being useful for TV watching or computer use which involves lots of motion, like games.

Not sure what you mean with "high-decay phosphors" (maybe a language problem) - I was talking about the afterglow of the phosphorous coating in the CRT. I remember early color TV sets with an enormous afterglow. Best noticeable when e.g. watching the night phase of the "24h of LeMans" race, where the head lights looked like long flames because of this afterglow effect...

[Dandy]

*cough cough* Productivity software *cough cough*

Not everyone uses their computer just for watching TV and playing games, lol.  :lol:
...

1+!
:biglaugh:
That's why I never really cared for the afterglow of computer monitors...

But afterglow on a TV screen is a completely different story...