We need to know what band (VHF, UHF, 800 MHz, 896 MHz) station you have, as the Uniboards are quite different for the 800 and 896 MSFs.
I had a problem with those connector assemblies. Some crud on top of the feed-thru capacitor was acting as a semiconductor, dragging a line low and causing all sorts of troubles. The connector assemblies can be unscrewed and unplugged. Scratch a locating mark on each one and remove one at a time. Then use an ohm-meter on every pin to ground and make sure you have infinite resistance (over 100 megohms). I measured 10-50k on one pin to ground with a digital multimeter that uses low-voltage on the ohms scale, but it acted like 1k to ground with 9.6V applied to it. Scraped the crud off the top and bottom of the feed-thru cap and the resistance went back to infinity. Put the cleaned connector assembly back and do another one. Most likely the two that connect the Uniboard to the Interconnect board under the RF tray are the culprits. If pushing on the Uniboard causes the problem to go away, then you should just try to find the signal that's changing and fix that. Could be a cracked foil, a bad solder joint (most unlikely), or a loose pin in one of the Uniboard's sockets. Loose in this context means it got spread internally and isn't putting enough pressure on the gold feed-thru pin. Any repair of this type will be a lot cheaper than another Uniboard. Bob M. ====== --- On Wed, 7/9/08, garyp609 <[EMAIL PROTECTED]> wrote: > From: garyp609 <[EMAIL PROTECTED]> > Subject: [Repeater-Builder] MSF5000 Uniboard Needed > To: [email protected] > Date: Wednesday, July 9, 2008, 6:18 AM > I am looking for a uniboard that snaps into the RF deck. I > was having a > problem with my repeater being off frequency on the receive > side by > 6khz. Upon inspection and testing of the repeater at the > site by > pressing on the uniboard the receive lines up and works > fine. There is > probably a bad cap or solder joint I was told. If anyone > knows where I > can get another uniboard please let me know. I was told in > another post > to clean the connections between the uniboard and the RF > deck and it > didn't fix the problem. I have narrowed it down to the > uniboard so any > help in locating one would be apppreciated. Thanks & > 73's > Gary K2ACY
