When I got my Escom A4000T there was a Picasso IV inside it.
The card worked perfectly for about a week until the scandoubler/flickerfixer on it didn't give any output.
This happened about two years ago, I didn't do any major troubleshooting but replaced it with a Cybervision64 and a videoslot SD/FF instead.
Today I tested the card in one of my A4000D instead to see if it's just my A4000T that's causing the trouble but the card's SD/FF gave no output

Is it worthwhile repairing the card by sending it to amigacenter for example? or sell it as broken?