Legend backplane failures

[ScoTTeL]

I have recently had a lot of backplanes come through that appear to not work. I plug in known working power supplies and processors and station packs and the system will not power up. I take these parts out of that plane and into another and they power up and work fine. The backplane does not look complex when removed from the plastic shell. No visible problems and looks like a single layer board. Any ideas? This is getting frustrating. I have been getting more bad ones than good lately. Help quick!!!

 

[TouchToneTommy]

There is a plastic "pin" that sticks out of the backplane and into the power supply, to keep the P.S. from powering up unless it's actually installed. These get broken off when backplanes are transported with power supplies installed. The usual "field modification" is to shove a B-connector into the hole on the back of the P.S.

 

[ScoTTeL]

What is a B connector? I have never heard of that one before.

 

[ttech]

I buy screws the a little longer than the pin and the same width, drill a small hole where the pin was and put the screw in throught the backplne and so it sticks through where the original pin was so it acts just like the original pin.


don