amiga 4000/40 video issues

sovietconscript · 01 March 2012, 23:38

recently picked up a amiga lot with an amiga 1000, 3000 and 4000 and 2 amiga monitors. oddly enough none of the amigas display through the 2 monitors rgb port but the composite useing the A1000 works fine on both (they are in fact amiga 15mhtz monitors) this left me not knowing if the a4000 is working. so i ran to storage and pulled my confirmed working 1084s monitor. the a3000 displayed perfect through rgb on it but when i hooked up the a4000 all i got was a crazy horizonal moving lines.

there is very little corrosion around the battery (i removed the batt) and it doesnt look like theres any damage so i don't think thats the issue. there is a mac emulation card installed on this machine and i think i read somewhere if its not confg. properly it can cause issues.

any ideas? what would be my cheapest route for an alternate video option as i would really like to get this machine running.

magnetic · 02 March 2012, 01:51

Soviet

It sounds like its the screenmode saved in the HD. (you may be in luck) boot with no startup sequence or just hold both mouse buttons down at boot and see if early boot screen comes up.

sovietconscript · 02 March 2012, 02:23

Quote:

Originally Posted by magnetic

Soviet

It sounds like its the screenmode saved in the HD. (you may be in luck) boot with no startup sequence or just hold both mouse buttons down at boot and see if early boot screen comes up.

yes! that worked. thanks. it makes sence as the owner beforer me was useing a multisync with it. how should i correct this? set display to ecs or am i going to have to reformat the hdd?

amiman99 · 02 March 2012, 02:52

Boot with no startup-sequence then type loadwb.
Minimize the CLI window (WB is behind this CLI)
In WB go to screen mode preferences and choose NTSC 640x200
Then save.
Reboot

sovietconscript · 02 March 2012, 21:03

that worked. loads up stright to wb. thanks

01 March 2012, 23:38	#1
sovietconscript Registered User Join Date: May 2009 Location: Pittsburgh Posts: 91	amiga 4000/40 video issues recently picked up a amiga lot with an amiga 1000, 3000 and 4000 and 2 amiga monitors. oddly enough none of the amigas display through the 2 monitors rgb port but the composite useing the A1000 works fine on both (they are in fact amiga 15mhtz monitors) this left me not knowing if the a4000 is working. so i ran to storage and pulled my confirmed working 1084s monitor. the a3000 displayed perfect through rgb on it but when i hooked up the a4000 all i got was a crazy horizonal moving lines. there is very little corrosion around the battery (i removed the batt) and it doesnt look like theres any damage so i don't think thats the issue. there is a mac emulation card installed on this machine and i think i read somewhere if its not confg. properly it can cause issues. any ideas? what would be my cheapest route for an alternate video option as i would really like to get this machine running.

02 March 2012, 02:52	#4
amiman99 Registered User Join Date: Sep 2009 Location: San Antonio, TX USA Age: 50 Posts: 1,185	Boot with no startup-sequence then type loadwb. Minimize the CLI window (WB is behind this CLI) In WB go to screen mode preferences and choose NTSC 640x200 Then save. Reboot Last edited by amiman99; 02 March 2012 at 02:58.

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02 March 2012, 01:51	#2
magnetic Banned Join Date: Oct 2010 Location: Los Angeles, USA Posts: 244	Soviet It sounds like its the screenmode saved in the HD. (you may be in luck) boot with no startup sequence or just hold both mouse buttons down at boot and see if early boot screen comes up.

02 March 2012, 21:03	#5
sovietconscript Registered User Join Date: May 2009 Location: Pittsburgh Posts: 91	that worked. loads up stright to wb. thanks

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