Hey everyone, first time posting in this section! crazy broad forum we've got here. Over the holidays I transplanted a really old hifi system into a big suitcase I found. I've done this before with little pc speakers and both have worked well without really needing much electronics knowledge. For this one I was going to mod it to run from battery power, but there's no step down transformer in the unit to make soldering in a battery simple, so I gave up on that haha so it just runs from AC power - easy! All is well except for one problem which has stumped me. The circuit that was inside the amp unit has this weird right-angled connection via 4 multiple-pinned connectors to join up the front panel of the unit with the rest of it. The front panel is required to be connected for the whole circuit to be powered. Thing is, whenever I move the suitcase around, something weird goes on with the connection. Turning the unit on will result in a really loud buzzing in the speakers, and if left for too long they speakers themselves start popping out of control. I am regularly able to remedy this by just wiggling the front panel part around and sometimes just reconnecting it altogether. Seems like a certain orientation has to be met for it to work properly. Here's a picture. Any ideas on what I could do? Thought about sanding down the pins and maybe putting some isopropyl around the place, but thought I'd ask here first.