The board will be tested when it arrives and after it is modified. Boards that do not pass the initial inspection for normal operation will be returned unmodified. Be sure you have a working player before sending in the board. 4308 mod kits are shipped almost immediately upon receipt of order, so turnaround on these is about a week. 4318 mod boards involve significant labor, so may take an additional week to process, although most orders are processed within two days.
Complete players are usually about two days.
For persons with the 4308 player who order the modification chip, if for some reason the player will not function, the chip is returnable. You must then get service on the player in the conventional manner from the retailer who sold the player. Historically, there has never been a circumstance where this mod caused a problem. For the 4318 mod, if your player does not work immediately upon installing the modified board, please contact me by email for replacement. If your player fails during the period of the factor warranty, you must mail me the original purchase receipt, as well as the player, and your device will be serviced according to the terms of the warranty.