Beomaster 8000 Type 1903 - Michigan Restoration Project - Initial Assessment

The workshop is still in the Beomaster 8000 mode so it is time to start the next Beomaster 8000 restoration project.

This Beomaster 8000 unit was actually delivered to me in person from Michigan.

Here are some assessment pictures.

Right off the bat, this Beomaster 8000 looks in pretty good shape.  The only glaring (visual) defect is that the metal lid that flips open to expose the tone control panel has broken off its hinge.  That will not affect the audio performance of the Beomaster 8000 but is a disappointment because it is an important cosmetic feature.

This broken lid looks beyond repair to me but I might be able to come up with a replacement.

The glass cover over the display LEDs looks to be in good condition.  No chips.  It just needs a good cleaning.

The two, round control wheels are good and they rotate perfectly.  That is a big plus.

As most of these Beomaster 8000 units are...the center press bar (that must be removed to open up the Beomaster) only has one of its flat metal springs.  No worries on that either.  I think I have only ever come across two Beomaster 8000 units that has the full set of springs.

Here is the Beomaster 8000 opened up.  The components look original.  I like that.
This is a later serial number unit so it has the nicer Microcomputer board with the easy-open, metal lid.

I removed the Tone Control & Volume board, the Source Input panel, the Display board, the Microcomputer board and the front Control panel.

That exposed the lid opening damper which, surprisingly is still intact.  Another positive.

I removed the lid opening damper assembly along with the spring loaded hinge assembly that the metal lid broke off of.

Next, I marked all of the cables (before removing them) and then removed the circuit boards that are easy to get to.

PREAMPLIFIER Board

FM & FM INTERFACE Boards

LEFT & RIGHT CHANNEL OUTPUT AMPLIFIER Boards

Note: I didn't actually remove those two boards yet.  They don't fall under the easy to remove category.
I will get those on the next post.

POWER SUPPLY & REMOTE RECEIVER Board

Note: This was the only board I found a dead (bug) body.  That isn't uncommon on old audio equipment that was in storage.

Here is the Beomaster 8000 cabinet with most of the boards and cables removed.

On the next post I will remove the two Output Amplifier assemblies and the four reservoir/filter capacitors for the +-55 Volt amplifier rails.

When the cabinet is empty I will clean the inside and treat the rusty sections...of which there are several.
That too, is not uncommon on vintage audio components that were in storage.

But as I said earlier, this Beomaster 8000 unit is very good shape.

On the circuit board restorations I will take advantage and put to use, my Workshop Beomaster 8000 to test the restored circuit boards before re-installing them into this Beomaster cabinet.

With the Left & Right Output Amplifier assemblies, I will use my Workshop testing jig that is designed to test the Beomaster 8000 Output Amplifier.  Using the jig I will be able to verify the Output Amplifiers are working and do initial settings of the no-load and DC offset adjustments.

One last photo is of the back of the Beomaster 8000 to show the Start Up circuit.
I plan to replace the two power relays and safety capacitor when I work on the rest of the power supply components.