how fare are you familiar with electronic equipment troubleshooting?
could you find components, test points if somebody would ask you for
that? do you have some electronic test equipment e.g. multimeter,
oscilloscope? --last year I helped somebody to fix one HP high-frequency
generator just per e-mail back and fort and he was able to fix the
equipment, if you are interested let me know
Regards
Alex
On 8/29/2016 4:41 PM, Don@True-Cal wrote:
Sure, my original post ask for anyone in the US as I live in Springfield
Missouri but I will be happy to ship anywhere in the states. I have the
complete schematics for the unit. Was hoping to find someone specializing in
SRS equipment or already having repair experience with the SR620.
Regards,
Don
-----Original Message-----
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Miller
Sent: Monday, August 29, 2016 4:37 PM
To: Discussion of precise time and frequency measurement <time-nuts@febo.com>
Subject: Re: [time-nuts] SR620 Problem
You might say where you are. Maybe someone lives close that can assist you.
Regards,
Tom
----- Original Message -----
From: "Don@True-Cal" <truecalservi...@gmail.com>
To: "'Time Nuts Group'" <time-nuts@febo.com>
Sent: Monday, August 29, 2016 5:17 PM
Subject: [time-nuts] SR620 Problem
Hello All,
Sorry if this is a repeat but not showing up in my sent mail. Changed the
list address slightly.
I'm looking for someone that has repair experience on the SR620 TIC. I
have
a failed unit that has previously worked perfectly for many years while
running continuously on my lab bench. The failure occurred after a very
dirty mains power failure during a storm. There was no other evidence of a
severe lightning strike so I suspect just a major power line glitch. I
have
a second unit so time to repair is not critical. I have checked and
confirmed all of the power supplies and eliminated all of the easy fix
scenarios already. The major symptom is absolutely no display of
indicators
or readout (unit looks to be off), -DROPOUT form the PS is ok. I believe
the
loss of LED and display is from the processor stopped U131B flop. I don't
have sufficient confidence, let alone spare IC to delve into the processor
chain. Is there someone in the US with this experience that I can send
this
unit to for repair. Being retired and all this just being a major hobby
makes repair cost a big concern.
Regards.
Don J.
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