xelement5x
Legend of Zelda NES PCB Front; Fixed!
After a generous amount of rubbing alcohol (91%) on many of the spots, a lot of the corrosion came up and the PCB looked a lot cleaner. However, some of the damage was already done in that the component in D1 (right below the battery) had corroded through.
I touched up a couple of the solder spots on the other side that were the worst and did a little continuity checking. The battery also appeared dead, but since I didn't have anything to replace it with I just left it as is.
I thought about trying to bridge D1 with some solder, but having touched up it's spots on the other side already the gap between the broken parts was pretty big and there was almost nothing left on one side near the diode to solder to.
Deciding I didn't want to go to Radio Shack, I pulled out a junk PCB and desoldered a diode from it, stuck it on the board, and decided to give the game a whirl to see if it was working now.
Much to my surprise, everything seemed to work! There was even an iota of charge left in the battery, so I was able to create a game and come back to it after shutting off the system. I'm not very confident about the data persisting for long, so when I get some coin cell holders I might slap one in for future posterity.
Not bad for a couple of wasted hours!
Legend of Zelda NES PCB Front; Fixed!
After a generous amount of rubbing alcohol (91%) on many of the spots, a lot of the corrosion came up and the PCB looked a lot cleaner. However, some of the damage was already done in that the component in D1 (right below the battery) had corroded through.
I touched up a couple of the solder spots on the other side that were the worst and did a little continuity checking. The battery also appeared dead, but since I didn't have anything to replace it with I just left it as is.
I thought about trying to bridge D1 with some solder, but having touched up it's spots on the other side already the gap between the broken parts was pretty big and there was almost nothing left on one side near the diode to solder to.
Deciding I didn't want to go to Radio Shack, I pulled out a junk PCB and desoldered a diode from it, stuck it on the board, and decided to give the game a whirl to see if it was working now.
Much to my surprise, everything seemed to work! There was even an iota of charge left in the battery, so I was able to create a game and come back to it after shutting off the system. I'm not very confident about the data persisting for long, so when I get some coin cell holders I might slap one in for future posterity.
Not bad for a couple of wasted hours!