Beogram 4002 (5513): Restoration of Worn Keypad

I am approaching the detail&beautification stage of the Beogram 4002 (5513) restoration that I am currently doing. This Beogram has (like 90% of them) a worn keypad. The original coating simply is not up to the stresses presented by skin chemistry containing acids and fats. Usually at this age if the deck has seen even only moderate use the pads show ugly finger smudges. I recently had some pads refurbished by a beofriend in Denmark to have them on hand when needed for restorations (I'd be happy to get you in touch if you want to get your keypad rebuilt!)

Here are a few impressions. This is the original worn keypad:

I needed to switch over the PCB that carries the actual switches, hence this was a good moment to refreshen the contact pads. I usually give them a light sanding with 2000 grit paper and then a coat of DeoxIT D100 to prevent further oxidation if they are not bent (if they are one needs to extract them, straighten them out and solder them back into place):

Then it was time to slide the PCB out of the original keypad:

Here is a comparison between old and rebuilt:

And after installation:

Doesn't my friend do an amazing job?? They really look very close to new! Like traveling with a time machine back to a B&O store in the 70s and picking one up!

Beogram 4002: Awesome Refurbished Keypads in the House!

Today, I received a small package from Denmark containing two refurbished Beogram 4002 keypads.  As my beofriend put it 'the weather was right' for the paint job, and it appears he was right! Here is a picture of these beauties:

He is an absolute artist! They really look like they just rolled off the B&O line in 1975! Wonderful job! I sent him the worn out keypad of a recent Beogram 4002 restoration that I did, and then he found an additional one! I just wanted to have them available for my next 4002 restorations. I'll be happy to get you in touch with my friend if you would like to send him your keypad. Don't try this at home! This needs the "Master's Touch"!...;-)

Beogram 4002/4004: Rebuilt Keypad Surface

A good day in beolover's life! I received a rebuilt Beogram 4002 keypad from a fellow 'beofriend' in Denmark. He is able to refinish the keypad surfaces to the original splendor. I was absolutely amazed when I received the package. The resurfaced switches looked 99% like the original. Very awesome! This will give the 4002 that I am restoring a pristine look. Well worth the money!

Here are a couple pictures. The first one shows the old pad with the circuit board removed for exchange to the rebuilt one. The usual damage to the keys from pressing on the surfaces with bare fingers is clearly apparent. Skin acids in combination with mechanical abrasion eats the surface finish over time, and a smudged appearance occurs. If you look closely, on the start key the finish is fully gone in a few spots. Absolutely un-beolovely!

Below is the rebuilt keypad. Absolutely pristine looking. If you hold it next to the damaged one, the pads have very much the same appearance. I am stunned! Like I time machined back to 1975 and picked one up at the B&O store! Excellent job!