[Elecraft] K2 Power Supply Crashed (RS-35M Help!)

[lbailey@aep.com]

My K2 power supply, Astron RS-35M, will put out low amperage...~2.5 
amps...to drive my K2, but when higher amperage is req'd for my TS440s & 
my almost finished KPA100, the output voltage goes to "0."  When I cycle 
the on-off switch, the voltage comes back up but still limited amp 
capability.  Receive works fine on the TS440s but when I key the mike, the 
rig goes dead & the voltmeter on the RS-35M reads "zero."  Anybody else 
had this experience?

Output voltage under low current demand......14.1 VDC & 0.77 mVAC ripple 
with Fluke 867B
Output voltage after high current demand.......0.8 VDC & 0.6 mVAC ripple

History...this power supply is about 15-20 years old & all I've done is 
tweak the output voltage via R5 up to 14.1 volts so that I would have 
ample charging voltage on the K2 battery.....I did this tweak about 2 yr. 
ago.  (This power supply stays on continuously)

73 de K5AVJ, Lynn Bailey
K2 #1411



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