Hello. A section of B&O products rarely seen here so let's give it some screen-time... Amongst the usual B&O stuff, I've been slowly collecting a small selection of B&O's test equipment (that they produced from somewhere around 1970's up until the late 1980's, see:

(A fact that I somewhat missed from the pics) was that the bottom-right corner of the front panel had a big dent. I guess the unit has been hit or dropped and the force hitting the output connector and bending the edge of the front panel.

Due to the bent front panel, some of the push-buttons would not move freely (or at all).

The big frequency adjust dial was not moving right; turning it clockwise it would mechanically hit a stop at 70/100 and go below-scale on the other end.

One of the bottom rubber feet and screw was missing and the others badly degraded and their screws rusted.

A black cover plate was missing from the amplitude adjust knob.

I was able to power the unit on (after having had a preliminary look inside) and I did have some output, so at least there was life.

Fortunately, the service manual is available online: Login to view image I started taking the front panel out by first removing the knobs: Login to view image The output connectors have a small metal plate on the back: Login to view image The connectors themselves look absolutely fine, that big coax connector looks like it took no damage from the impact. Once removed, the impact area can be seen clearly on the front panel: Login to view image One of the bottom feet: Login to view image Using a vise I started bending the parts back into shape: Login to view image Attempt to cover the front panel for scratches: Login to view image And it worked pretty well! In hindsight I probably should've attempted to bent it even more (also check if the front-lip is actually perpendicular) as it's still not perfect, but still it does look a lot better. Small chips of paint did come off (some was already missing), around the connector holes: Login to view image The two right-most output level switches (bottom row) are still not perfectly free to move so I'll need to do some more work on that. Login to view image At least the bend is not so obvious any more! I modeled and 3D-printed a new cap for the knob, and some new feet: Login to view image I made first test-batch with PLA, but I did the final print with TPU which is a bit rubber-like flexible filament: Login to view image Might not look as pretty as real rubber, but works well for the feet. I soaked the orignal screws in vinegar and they cleaned so well that they were re-used and I needed to source just one more screw for the missing feet. The issue with the frequency dial was traced to a presumably earlier repair attempt; the linkage between the dial and the variable capacitor goes between some gears and at one point there is a mechanical stops to prevent it from over-turning the variable capacitor, it was just put in at a wrong position. Taking it apart, cleaning and relubing and re-insterting it in another position and now the dial goes a complete revolution with the scale. Using just a multimeter (with a non-precision frequency measurement function) I coarse-fitted the dial back into place, I'll need to calibrate this later. Login to view image I've had a quick look with an oscilloscope and I'll use that to make the final adjustment. The waveform seems stable even on the highest ranges, both sine and square waveform. There is a small issue with the x10 range as the waveform is clipping on the bottom. A bit stranger fault is that the output signal level seems way higher than set with the push-buttons; this might have something to due with the range selector buttons if those are still not latching correctly. Some work still ahead, but it's basically working and starting to look quite presentable now: Login to view image Thanks for reading!