I replaced the battery on my Alta, only to discover it would only work while plugged in, but not when unplugged. My Alta worked fine before the new battery, but would only last a day or two days. I read Dave Bullock’s comment above. I had nothing else to lose with my tiny paper weight, so i placed a tiny drop of solder across F1 (the same side as the battery terminals). Nothing came to life right away. I put it all back together, plugged it in, unplugged and and Bingo! It worked!…. Thank you DAVE! I agree shorting fuses is not the best practice… but I figure this is 4.25 volts device and I am now enjoying the device again. I would replace the fuse if I could … but this thing is TINY.

I really tried hard to not touch the battery wires to the board or case. I felt I succeeded, but with a blown fuse… I must have failed. Be careful to not let those wires touch anything.

I replaced the battery on my Alta, only to discover it would only work while plugged in, but not when unplugged. My Alta worked fine before the new battery, but would only last a day or two days. I read Dave Bullock’s comment above. I had nothing else to lose with my tiny paper weight, so i placed a tiny drop of solder across F1 (the same side as the battery terminals). Nothing came to life right away. I put it all back together, plugged it in, unplugged and and Bingo! It worked!…. Thank you DAVE! I agree shorting fuses is not the best practice… but I figure this is 4.25 volts device and I am now enjoying the device again. I would replace the fuse if I could … but this thing in TINY.

I really tried hard to not touch the battery wires to the board or case. I felt I succeeded, but with a blown fuse… I must have failed. Be careful to not let those wires touch anything.