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Tuesday, July 20, 2021

Beogram 8002 From North Texas: Starting with some cabinet repairs

Before jumping right into the Beogram 8002 circuit board restoration tasks I decided to start with a couple of cabinet repairs.  There are two necessary cabinet repairs on this Beogram 8002 that require epoxy and 24 hours of epoxy curing.

The first repair is on the securing post for the main circuit board.
On the Beogram 8002 (and BG8000) the main circuit board mounts onto the underside of the cabinet lid.
There are guides that the circuit board slides onto, then a post with a rubber grommet that secures the circuit board in place.

When the circuit board is installed it should look like this.














The circuit board fits into the slot of the rubber grommet. The grommet slides over the mounting post.

On this current Beogram 8002 project the mounting post for the rubber grommet is missing.



























I have never seen that before. It makes me wonder how that could break like that.
The broken post and rubber grommet were missing...until I removed the Beogram 8002 component parts from the frame.

Underneath the floating chassis was the broken post and the grommet.
Here is a photo of the broken piece along with two candidates for a replacement.

























I could epoxy the original post back in place but I don't think it would be secure enough to last.  It would surely break off again.

My fix was to fashion a replacement post with a hole through the center.
I used a drill bit and an M3 tap to make a threaded hole for a mounting screw that would go through the replacement post and into the Beogram cabinet lid frame.



























With the threaded holes, an M3 screw and some JBWeld epoxy the replacement post should be able to stand up to any pressure against it.
























After the epoxy cured for 24 hours I fit the grommet onto the post.  Everything feels very tight and secure.


























That takes care of one cabinet problem.

The second issue is the typical problem of the fixed hinge catch for the dust cover lid lowering mechanism.

The Beogram 8002 dust cover has a leaf spring with a sliding bracket on the end that fits into the fixed hinge catch on the underside of the dust cover.  That hinge catch needs to be solidly attached to the dust cover.

The original B&O factory installation used double-side foam tape for the attachment. After over 30 years the original foam tape deteriorates and the catch becomes loose. That results in the lowering mechanism for the dust cover to fail.

Here is the hinge catch with the deteriorated tape.





















































I soaked the old tape residue with Goo Gone then cleaned everything up.



























I applied some clear epoxy for this repair and then put some weight on the hinge catch to hold it in place for 24 hours.



























After curing for 24 hours this hinge catch should be ready to use.



























I will put these cabinet pieces aside now and start on the circuit board restoration tasks.

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