I have a T300 all electronic unit built in 2006 and the hour meter started reading only with the upper or lower half, can't recall which. There was a similar post/help request but no real help was given other than swapping the panel out to verify. New is over $400.00 I have the service manual with the schematics, but as the wire schematic only shows the poorly described or labeled wires going into the Bob J2 Connector. I have it at an electronics shop, they think they may have found or repaired something. They are asking me to reconnect it to see if it works or not. NOT WHAT I WAS HOPING FOR! I disassembled the panel to have a look for myself and after removing the LCD screen, I noticed that when I touch some of the contacts the display would display segments very clearly. So that is when I called the electronics shop. The board has a brand name of Vansco on it. I found two places online that repair their boards with a free evaluation. But one has a minimum $250 charge and the other was evasive about a high and low price. I also found a Speedo repair place in Canada that gave me a price of $385 to repair it. At that price I would rather buy the new one. If anyone has been down this road before and can offer some help, I would surely appreciate it. I will post back as it gets repaired of replaced. Ken