WARNING - These servos appear to have a fatal design flaw and mine have failed within a few hours of operation. This is my personal experience.
I have purchased six of these servos (at no minor expense) and four of them have failed within a few hours. They are all used as tail servos on sailplanes, 4.8 volts and very low load. The failures are identical to the burnout shown on the http://www.lomcovak.cz/eindex.html site. They are all marked V2 on the circuit board.
The servo amp IC smokes out and the servo will fail in one extreme position. If you are lucky, the power lead wire insulation will not fail. If the insulation fails and the servo power leads short out, the battery will fail in a few seconds causing an out of control crash, regardless of the quality of the remaining components.
After losing one model, the remaining servos were removed from all planes and put on the bench servo cycler. One servo failed in under 3 hours of no load operation, saving another model. The servo started to jitter, lost it's center, drove hard to the stop and started to smoke. Pictures below.
All of the servos have now been returned to Multiplex, and I am awaiting a response. If they reply, it will posted here.
Added May 30, 2005. Hitec USA replaced the servos under warranty, no acknowledgement of the high failure rate of these servos. These are going into the trash, they are not even worth using in a Zagi.
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