Picasso II issue (not caused by fblit)

[save2600]

-sigh-

Received and installed a Picasso II video card today and cannot seem to relieve it of the garbage/colourful lines it throws up on the screen when opening larger drawers. It's almost as if for every second the HD lights up, a new line of garbage gets drawn on the screen. OS3.9 (boing bagless) and no fblit or any other graphics manipulating cheaters are installed.

Bad ram chip? Chips need reseating? Something not configured right? Or ultra noisy SCSI bus?

I've tried ALL Picasso graphics drivers to no avail. In fact, the latter 2 Picasso drivers crash my system, so I keep going back to the original and lowest revision. Only other thing in the system besides the GVP 030 accelerator is a 2mb Agnus board and a DKB multi-start II (both jumpered properly).

1mb Picasso II, A2000 w/ KS 3.1, 2mb Chip, 9mb 32-bit fast and card NOT in segmented memory mode. There are no other Zorro cards installed.

What do you think is going on here?
 

[save2600]

I've tried ALL the various Picasso resolutions and depths. Doesn't matter which one as I still get the bloody lines. Sometimes, the mouse pointer carries with it, a large distorted square around the screen as well.

Machine crashes/resets before too long if I use any drivers besides the Picasso96 one from '97.

Have reseated the chips and moved the card farther down the Zorro line. Problem still exists.

Upon real close observation of the board, there is a cooked resistor. It's designation is blocked by the component itself, but it's the closest resistor to the bottom VGA passthrough port. In between the pass through relay and bottom VGA port. She still has resistance to her, but is burnt so badly, I could barely make out what her original value should be. After some cleaning and using an eye piece, I managed to determine that she's supposed to be the same value as the ones around her. And she tests within tolerance. Still, wouldn't be a bad idea to replace the old gal. I do not use the pass through feature of this, so was thinking this really isn't *the* problem.

I guess the next step would be to start replacing the 256x4 DIPS.

Anyone know where they can be had in quantity?

[save2600]

@57goldtop:

Was easy enough to figure out the value of that resistor and it does test within tolerance, despite its discolouration. And sure enough: it was indeed the old power supply that was causing the extraneous garbage out of my Picasso II - thank you very much. Replaced it with a different one and the video output looks great now. Played with it all night last night. You know... an 060, Picasso II, X-surf equipped Amiga 2500 is really more than "good enough" for surfing, e-mailing, news reading, etc. I'm more than impressed with the system as-is, but would still like to add a Deneb and AHI compatible soundcard though. Someday...

[save2600]

Yup - she's working like a charm. In fact, I'm using my A2500/Picasso to reply to this! Coincidentally, I ordered and bought 16 new 256kx4 dips today. Well, so I thought. Went through their internet checkout system and a few hours later, received a reply explaining they had only 3 of the 60ns chips left  :-(   What a bummer! At about $4 a piece, I figured I'd throw the old ones in my 2091 that's been begging for some ram.

Still on the lookout for 256kx4 dips if anyone happens to have and is reading this  :-)