Hi Peter,
I had my 3551 failed sometime ago, was intermittent connections in the unit, just cleaned and reseated connectors and IC's, unit has worked fine since? You may want to try it and see if it works. From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Saturday, August 07, 2010 11:18 AM To: Repeater-Builder Subject: [Repeater-Builder] HP3551A Service manual Hi, I saw someone had used a HP3551A TIMS to set up repeater audio levels. I have a used HP3551A also, but it recently stopped working. Wonder if anyone had schematics? The manual I found online had everything but no schematics. A good high resolution Jpeg photo of the schematics would be greatly appreciated. Peter Ex. G8DCB. Now resident in FL.USA.
