skykrawler Posted December 24, 2025 Report Posted December 24, 2025 On 12/22/2025 at 9:13 PM, redbaron1982 said: A 2+ year update on this, the KFC150 was finally repaired by @Jake@BevanAviation and it still working perfect. The avionics blower fix, replacing the burnt transistor, also is still working just fine. Jake is very helpful on these King systems. When I bought my airplane there was no cooling hose connection the KAP150 autopilot. I resolved that. The voltage regulator, which throws off a lot of heat, is immediately below the 150 at the bottom of the stack. Usually I direct the right side Wemac ball vent in that direction to help out. I've been planning to tap the fresh air scat hose on the right to feed some air directly to the gap between the regulator and the 150. I also noticed the small outlet from the airbox forward of the wheel well blows air (hot in the winter!) directly at the input to the avionics cooling fan. Since it points straight down I taped a T pipe fitting to it to make it blow out sideways.
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