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HV and filaments off between 10:42 and 10:48 soundings.
Pressure fault led on. Both fans at bottom rear of tx-rack
and the fans at back of HPTx unit off. No time to
investigate since I leave for Sodankyla on Sunday.
Put 5MHz from EISCAT (via fibre) back into Ailtech synth.
Put in "spare" used fan on top of Tx rack. The old fan was pracically seized.
Fils and HV on, start sounding again at full power.
Sounder had stopped at 20:00 UT on 4 Oct 2010. Fuse in Ailtech synth blown.
Faulty 2200 uF capacitor in power supply. Replaced by J.-B. H. Also burnt
copper land on PS board re-soldered.
Since the "original" Ailtech was still misbehaving at some frequencies,
I put in the spare Ailtech from BAS, 230V etc. at the rear on the floor.
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updated 27 Aug-2010