hey guys,

im using my old 4PK with the R614FF receiver for about 3 months now without a problem.

but racing today changed the whole story. in a 7 min heats, my receiver went to fail safe mode over 10 times for about 1 second each time then get back to full control. it was running fine before.

im running a lipo rx with hitec high voltage 7940 and 7950. changing to 6v hump pack didnt help either.

its definitely is the R614FF receiver that was toying around. i change to the old R604FS receiver and run a 6v nimh hump pack and the problem went away.

any thoughts on what could have been the cause??