RGB not syncing on Commodore 1084 Monitor [SOLVED]

[CaelThunderwing]

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$.

[Oldsmobile_Mike]

Are you trying to troubleshoot the monitor or the cable?  Try connecting via the composite output from the Amiga to the monitor, does it display correctly then?

[CaelThunderwing]

Yea but only in greyscale

[Oldsmobile_Mike]

Yea but only in greyscale

That's as it should be.

Okay, if the monitor displays everything correctly when connected via composite, your problem is most likely the cable.  Sometimes these old 1084's have cold or cracked solder joints on the inside (where the circuit board connects to the connector) which can cause erratic operation, but I'd try a different cable first.

When you say "it's not syncing", what exactly do you mean?  Is the picture rolling or something?  Some of these 1084's have adjustments that can only be made on the inside.  C=, in their infinite wisdom, made about 10 different models of "1084", all of which are slightly different.  

[CaelThunderwing]

yea it scrolls  its connected to the 6 pin plug i havent purchased a 8 pin adapter for the TTL RGB.

[Oldsmobile_Mike]

According to this thread some models of 1084 have a v.sync pot inside the case, adjustable with either an allen wrench or a flat screwdriver.  IMHO I'd try another cable, first.

[CaelThunderwing]

should io try for another 6 pin or get the bpin TTL Cable like from here? https://www.vesalia.de/e_amigamonitorcables.htm

[James1095]

Do you have access to an oscilloscope? A logic probe would also work in a pinch. What you want to do is check the Vsync pin in the monitor end of the cable and see if the sync signal is there.

[CaelThunderwing]

thatd be a no on both ends sadly :/

[UberFreak]

Do you have a multimeter?
Then you can at least check if the cable is wired correctly.

[CaelThunderwing]

i think i do would i be looking for any feedback on the CSYNC Pin?

and if i haveto order a new cable the site i linked earlier and w/ the images i posted should i get one for the 8pin DIN or the 6pin DIN ?

EDIT: added pictures as attachments to make it easier, forgot that the iphone4 takes at such an image size.

[commatari]

You will need a 6 pin DIN connector for the 1084P monitor. The input is analog RGB.

[Oldsmobile_Mike]

Whoa there big boy, try scaling those pictures down, or use the built-in forum tools to attach them to your post.  Makes 'em a lot easier for people to see. :lol:

If you don't have any other testing equipment, try testing the continuity of the six pins on the cable.  A basic multimeter can do that for you.  Make sure they're connecting to the right pins on the 23-pin connector.

[CaelThunderwing]

Whoa there big boy, try scaling those pictures down, or use the built-in forum tools to attach them to your post.  Makes 'em a lot easier for people to see. :lol:

If you don't have any other testing equipment, try testing the continuity of the six pins on the cable.  A basic multimeter can do that for you.  Make sure they're connecting to the right pins on the 23-pin connector.

 is there a wirediagram i can use to know which connects to witch on the 23pin side?

and if the amiga would only work w/ the 6pin DIN adapter whats the 8 pin TTL one for?

[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.