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Author Topic: problems with audio & video on a1200 bvision - motherboard issue?  (Read 2457 times)

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Offline rvo_nlTopic starter

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Hi everyone! Finally found some time (and space!) to play around with my Amiga again, but Ive run into a very strange problem. First, a bit of a background story.
 
A few years ago I returned to the Amiga 'scene' by buying a load of new hard- and software. Most important: a new BlizzardPPC board. I've had lots of fun (well, most of the time anyway) setting this machine up, and had it running in perfect triple-boot harmony.
 
Then, last summer, I started having corrupt graphics in CGX output. Often it started in the menu's, where garbled lines started appearing, but the more windows I opened, the more corrupt the graphics became. After reinstalling OS3.9 and installing a new PSU, I concluded it must have been the BlizzardVision board that had given up, so I went out (to amibay) and bought 2 new ones (cant have enough of them, I now have 4 in total). Worked first time, so once again I was a happy guy.
 
Until today. Since the beginning of this year I havent touched my Amiga. Now that I moved to a new home, I finally got round to unpacking and reinstalling the (carefully packed) BPPC and Bvision. Well, first time it seemed to work fine, good graphics, nice sound, perfect. So I turned the power off and did some cleaning up, small mods to the casing etc. When I turned it back on again, I had the exact same graphic problems as last year, and also there was no sound output at all. Shocked, I first suspected I mistakenly swapped Bvision or cabling around, so I tried every possible combination of those items, but that didnt solve anything.
 
Frustrated, and without swapping any cables or hardware, I screwed the machine back together and turned it on for the last time. To my surprise, the graphics were okay and the sound was working fine..
 
What is going on here! Is there a relation (on the a1200 motherboard?) to corrupt RTG output and the audio not working? Since Im pretty sure this is going to happen again soon or later.
 
Please dont start on software or power problems, thats not the issue here.
 
Any ideas welcome!
Amiga 1200 (1d4) Kickstart 3.1 (40.68), Elbox Power/Winner tower (450w psu), BlizzardPPC 603e+ @240mhz & 060 @50mhz, 256MB, Bvision, IDE-fix Express, IndivisionAGA, 120GB IDE, cd, dvd, Cocolino, Micronik Keycase, PCMCIA Ethernet, Ratte monitor switcher, Prelude1200, triple boot WB3.1 / OS3.9 / OS4.1, Win95 / MacOS8.1
 

Offline rvo_nlTopic starter

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Re: problems with audio & video on a1200 bvision - motherboard issue?
« Reply #1 on: April 23, 2012, 08:12:28 PM »
well, Im not going to swap my classic, thats for sure :) seems to me like you suffered mostly software issues, thats not the case here. software-wise its all sorted out. got warpos, ward3d, powerup etc all working (semi-)transparent. thanks for the reply though. good to see you didnt quit Amiga entirely after such dissapointment.
Amiga 1200 (1d4) Kickstart 3.1 (40.68), Elbox Power/Winner tower (450w psu), BlizzardPPC 603e+ @240mhz & 060 @50mhz, 256MB, Bvision, IDE-fix Express, IndivisionAGA, 120GB IDE, cd, dvd, Cocolino, Micronik Keycase, PCMCIA Ethernet, Ratte monitor switcher, Prelude1200, triple boot WB3.1 / OS3.9 / OS4.1, Win95 / MacOS8.1
 

Offline rvo_nlTopic starter

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Re: problems with audio & video on a1200 bvision - motherboard issue?
« Reply #2 on: April 25, 2012, 09:32:39 AM »
any other ideas?
Amiga 1200 (1d4) Kickstart 3.1 (40.68), Elbox Power/Winner tower (450w psu), BlizzardPPC 603e+ @240mhz & 060 @50mhz, 256MB, Bvision, IDE-fix Express, IndivisionAGA, 120GB IDE, cd, dvd, Cocolino, Micronik Keycase, PCMCIA Ethernet, Ratte monitor switcher, Prelude1200, triple boot WB3.1 / OS3.9 / OS4.1, Win95 / MacOS8.1
 

Offline rvo_nlTopic starter

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Re: problems with audio & video on a1200 bvision - motherboard issue?
« Reply #3 on: April 25, 2012, 04:54:26 PM »
well, you are right. my first ppc card had lots of troubles too but this one runs fine and dont forget, I had it running for a full year without any problems. I do have a later 060 model.
Amiga 1200 (1d4) Kickstart 3.1 (40.68), Elbox Power/Winner tower (450w psu), BlizzardPPC 603e+ @240mhz & 060 @50mhz, 256MB, Bvision, IDE-fix Express, IndivisionAGA, 120GB IDE, cd, dvd, Cocolino, Micronik Keycase, PCMCIA Ethernet, Ratte monitor switcher, Prelude1200, triple boot WB3.1 / OS3.9 / OS4.1, Win95 / MacOS8.1
 

Offline rvo_nlTopic starter

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Re: problems with audio & video on a1200 bvision - motherboard issue?
« Reply #4 on: April 25, 2012, 08:06:17 PM »
thanks for trying though ;)

I shouldnt complain, at least its working now.. and when it works, this machine really shines.
Amiga 1200 (1d4) Kickstart 3.1 (40.68), Elbox Power/Winner tower (450w psu), BlizzardPPC 603e+ @240mhz & 060 @50mhz, 256MB, Bvision, IDE-fix Express, IndivisionAGA, 120GB IDE, cd, dvd, Cocolino, Micronik Keycase, PCMCIA Ethernet, Ratte monitor switcher, Prelude1200, triple boot WB3.1 / OS3.9 / OS4.1, Win95 / MacOS8.1
 

Offline rvo_nlTopic starter

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Re: problems with audio & video on a1200 bvision - motherboard issue?
« Reply #5 on: April 25, 2012, 09:58:06 PM »
yeah it could be related to the screws. I never figured out how tight I should screw the bvision in place. as tight as possible isnt working here. did install proper cooling on the boards. do you people also feed extra power to the motherboard over the floppy drive connector?
Amiga 1200 (1d4) Kickstart 3.1 (40.68), Elbox Power/Winner tower (450w psu), BlizzardPPC 603e+ @240mhz & 060 @50mhz, 256MB, Bvision, IDE-fix Express, IndivisionAGA, 120GB IDE, cd, dvd, Cocolino, Micronik Keycase, PCMCIA Ethernet, Ratte monitor switcher, Prelude1200, triple boot WB3.1 / OS3.9 / OS4.1, Win95 / MacOS8.1