[Amps] Alpha 87A Question

[jon s]

Thanks to everyone so far for their thoughts
 
The 87A was completely "OFF" - not in standby. I understand that there is still some power running some some of the circuits as the meters indicate exciter power levels even when powered down.
 
Upon power up the amp goes into it's warm-up mode - the Wait LED lights; no Hard Fault Codes are indicated; after warm-up mode -  upon pressing a Band segment button on the Amplifier there is motor movement in the amp as it does it's "thing". However the amplifier does not sense the RF from the exciter to change bands automatically. Also no "amplification" is indicated. Th amp does not shut down by itself and powers down without issue when turning it off. 
 
We removed the top cover looking for a component, (based on the "bang and flash" described by my father I expected to see something blown (capacitor?). Nothing was immediately evident however.
 
I tried to talk to the amplifier using a comm program as described in the manual - I was unsuccessful in this however. I guess my Father will call Alpha power Monday and ultimately probably box it up and ship it back for diagnoses and repair.
 
Previously to this problem the amp has performed without issue for 4 1/2 years - my Father just chases DX - I occasionally go to his station and operate contests with it.
 
(My apologies for the non-technical nature of my descriptions) 
 
73
Jon
K9JS
 
On a non related amp note - I am off to PJ2 for a week of R&R and a Multi entry in the CQWW RTTY contest next weekend, PJ2/K9JS during the week and PJ2B during the contest. I'll only be able to access email Monday for a while before leaving so any questions posed to me will not be able to be read and answered until my return 27 September.
 
 
 
 
 
 


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