I just completed a successful Icom 718 PA board repair and thought that some may benefit from what I learned. I will put the most important information first and you can read the extended story if you have time and find it interesting. FYI: My 718 is the older model with bipolar transistors on the PA board. I replaced my leaking driver transistors (2SC3133) with a matched pair of Eleflow 2SC1945 transistors sourced from weazle66 on ebay. They fit the board without modification and are working perfectly after I reset the driver and final bias and reset the max power out adjustment. Here is the extended story: My radio was running hot to the touch, very hot, when I was not transmitting. I checked the current draw and found that it was drawing 1.5A when off and almost 3A on receive. There should be no current when the radio is off and less than 1.3 A on receive. When I checked the bias voltages I found 800 mv on receive on the driver transistors when there should have been 0 volts. The same 800 mv was present when the radio was turned off. On the 718 (and most other radios) the power remains connected to the finals when the radio is turned off. I lifted the collectors on each of the drivers and found that one of the transistors was leaking voltage from the collector to the base causing the drivers to conduct. Though I have not figured out how; the unwanted bias voltage was also present on the basses of the final transistors. After replacing the drivers I had 0 volts bias on receive (and when the power was off) on all of the transistors on the PA board and 600 mv on the drivers and finals (as there should be) in transmit mode. My Icom 718 is now cold to the touch at all times on receive (or when off) and only slightly warm as you would expect, when talking on SSB. When researching my problem on the internet I found several people asking about their 718s running hot but found no explanations or solutions. I expect that the same problem, running hot and drawing too much current when turned off or on receive, can and does occur in other radios.