Hi Jeff, KB2M
I have sent to you the schematic diagram for the G5500 but the message bounced back to me because your @comcast.net don't match with my @tin.it
By the way and first of all check if you have 5 volt DC between studs A1 and A3 and between studs E1 and E3 on the rear of control box.
If you don't have 5 volts DC probably the regulator Q2 7806C is gone.
If you have another email address please let me know and I will try again to send you the schematic diagram.
73" de
i8CVS Domenico
----- Original Message ----- From: "Jeff KB2M" kb2m@comcast.net To: amsat-bb@amsat.org Sent: Tuesday, July 19, 2011 10:54 PM Subject: [amsat-bb] Yaesu 5500 rotor problem
I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display az and el
information
on the control box. Also when I try to use computer control it goes all
the
way to stop in both azimuth and elevation. I'm thinking this might be in
the
control box, as both az and el are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior az el Yaesu box about 14 years ago but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated.
73 Jeff kb2m
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