Not a fan of his cards after attempting to repair an ACA500 over the last few weeks. Its not the card itself I have an issue with, but the parts chosen to build them. All of the chips used are very very old versions of the chips. I had a hell of a time finding any to replace. When I did I had to buy them all. Worse is they are the lower versions of many of the chips that even when new were slower than what you can get for pennies more. An example is the LS245's he used, in a package size no longer produced. You can get them in the larger package which is what I had to do and bend the pins in to hot air solder them in using solder paste and a custom mask to lay it down. I bought 50 to replace 2 on the board. It was $12 for them, but I could have bought an F245 if he used it for 6 cents in the proper size.
This is also why his boards sell out and dont get produced any more, the parts to make them are gone or in to low of a quantity to support required warranties if they were.
Just my experience, how true I dont know, but I've seen it a lot now.
