I'm guessing this is a pretty newb-ish question, but while I was making one of my homebrew NROM carts (de-soldering the old chips, switching the mirroring, re-soldering the new EPROMs) when I went to test the cart in my NES, I noticed that the graphics seemed to "bleed" vertically on the screen. I've done around 30 carts, and only this one has the bleeding. The cart is clean and it does this consistenty. (re-adjusting the cart in the NES does not seem to be the issue).
I figure the problem is likely something to do with the CHR.
Visually, it looks fine (to me), but I've got very limited electronics experience. I'm picking up knowledge as I go.
I was wondering what would be the "smart" or "correct" method of diagnosing the problem. Should I just use a multimeter and check each CHR pin against it's corresponding cartridge connector and make sure the connection is good? Or will I save time by just de-soldering/verifying the chip contents and re-soldering. (or just toss the board)
Al
I figure the problem is likely something to do with the CHR.
Visually, it looks fine (to me), but I've got very limited electronics experience. I'm picking up knowledge as I go.
I was wondering what would be the "smart" or "correct" method of diagnosing the problem. Should I just use a multimeter and check each CHR pin against it's corresponding cartridge connector and make sure the connection is good? Or will I save time by just de-soldering/verifying the chip contents and re-soldering. (or just toss the board)
Al