[jfrancis49]

Hello,

I am not very electronic savvy but do investigate how to make the B & O equipment I do have look as good as possible, and I have learned by my mistakes in the process. Like don’t clean your matte finish Beogram platters with anything stronger than water.

So regarding the keypad, have used Mohawk Dead Flat lacquer spray on the 4002 keypad with excellent visual results. The downside is it isn’t very durable over time if touched with your bare hands.

This was my process. You can do one of two things, completely strip the old coating off or spray over it. The first is if you want to completely strip off the old finish, tape off everything but your keypad, after removing the back control panel. In a well ventilated area get a cloth or cotton pads and use acetone to remove the old finish. Dampened the cloth don’t use excess acetone. The metal will end up looking shiny and you might think it has destroyed the look but it hasn’t. After removing the visible finish remove the tape and clean everything with warm soapy water. I have then carefully gone over the stepped metal with alcohol on a cloth to remove any streaks or you can use acetone again if careful.

After is dry I then tape off the frame and pads and spray the black areas with matte black where there is a gap at the top and bottom of the metal keypad. After several light coats of the black I remove the tape from the stripped keypad. Mask off any of the frame showing, but don’t worry about the black gaps you painted, those can be sprayed with the matte clear lacquer paint. You then can use the matte paint to spray the keypad, using several light coats. If you don’t want to strip off the old finish on the keypad, skip that step and go to painting the black areas first and follow the rest of the steps

This process worked for me and looked brand new, but won’t last too long under a lot of direct contact with oils from your fingers. You can use a cloth to touch the keypad when using your turntable or get a remote with plug-in panel from Beolover (Google him) or search eBay.

I chose the Mohawk spray lacquer because I read it was used to coat musical instruments which get a lot of handling. In my photo you will also see a can of epoxy matte. Epoxy is harder and more durable than lacquer but I am told by an automotive paint shop that any matte finish will get shiny over time with use. I have a keypad I completely removed from the control frame,that I plan on recoating with the epoxy. I advise extreme caution should you try to completely remove the metal keypad from the frame and the plastic keys behind it, it is easily bent and realignment of everything is tricky.

 

• This reply was modified 5 months, 1 week ago by jfrancis49.
• This reply was modified 5 months, 1 week ago by jfrancis49.

[jfrancis49]

Thanks Martin!

[jfrancis49]

Thanks for the suggestion Martin. Just to be clear are you referring to IC2?

John

[jfrancis49]

Hello Luigi,

If this turntable has not been used for sometime it probably needs at the least be cleaned and lubricated. As you know these are not simple machines and depending on your skill level you may need someone to do someone familiar with servicing it. There is a service manual you can download from this site that can be of help for many tonearm and servo tracking adjustments after cleaning and lubricating. The keypad has copper contacts that may be oxidized and causing your stop key function. If you take the keypad out it can be cleaned by inserting a small strip of sandpaper between the contacts. Ideally the sensor arm should be removed and the tone arm linkage cleaned and lubricated.

If you have not had a capacitor replacement, that needs to be done as well, look up Beoparts on the web to see if they can help. There are electronic faults that unless you have experience with electronics will not be solved by cleaning, lubricating or adjustment.

I am not an electronics technician. These are great turntables but take it from someone who basically can solder and follow guidance from a lot more experienced people on this website, there are a lot of things to sort out before a simple answer can be given to your turntable issues. But maybe one of the more experienced people here will give you a more specific solution to your problems.

Good luck.

John

[jfrancis49]

Just in case you meant tracking force for a record, 1.2 grams is a good starting place. Different cartridges have different recommended tracking forces.

John

[jfrancis49]

Thanks to all of you for the advice and feedback. I went ahead and placed the capacitor according to the spare parts board, I think that placement was consistent with Martin’s advice. I had some confusion tracing the circuit.

The receiver is now working, and I am not connecting a turntable to it anyway so maybe the polarity is immaterial.

Not an audiophile receiver as Martin pointed out, but a nice unit to have as a secondary sound system.

Happy Holdays!

[jfrancis49]

Sorry to sound so dense, but can someone tell me if the positive polarity of C110 is then correctly connected to R110 as is on the parts board?

Thanks!

[jfrancis49]

Hello Martin,

I am hopefully tracing from TR100/R111 correctly and the circuit goes through R110 to C110. I have your capacitor replacement kit for the 1600 and the photo for that looks like the positive end of C110 goes to the outside of the board. It is the capacitor that is furthest top right and is 2.2uf. Does that sound correct?

Ps. Thanks Glitch!

[jfrancis49]

Thank you Martin, that was very helpful!

John

 

[jfrancis49]

Thanks for that Martin. Does it matter with the grey power wires which goes right or left?

John

[jfrancis49]

Here are images of the belts I made. The idea of 3D printing belts sounds like an interesting one. I don’t have that skill at this point or the equipment. Maybe someone else might take on that challenge.

John

[jfrancis49]

Hello Tomas,

It is probably not likely you are going to find easily find original B & O replacement belts in good condition for the 1700/1600 receiver. After a long time of searching I did find a source for making my own replacement belts. The belt is not the exact width and needs to be trimmed down and spliced to make it a loop. But if done carefully looks better than the original and is much more durable. I would rather have the originals but that is an unlikely option.

There are different places on the internet you can find them. If you do a search for “Industrial Drive Timing Belts HTD 3M Pitch Timing Belt Width 30mm Open-Ended Transmission Synchronous Belts” you will find several sources, it is branded 3M but made most likely in China. It is available in different lengths and I would get more than you think you need. You will have to cut the 30mm to around 27-28mm width and cut the length based on an old 1600 belt. Getting a clean cut between the belt ribs for a good splice is the tricky part. That is why I would get more than I need. If done cleanly and straight you then use Gorilla Super Glue Gel and clamp it for 24 hours. I have done two belts and the seam is invisible. You can use WD-40 and a cotton swab to remove small amounts of the visible glue.

John

[jfrancis49]

Also there are mechanical parts that need to be cleaned and properly lubricated that may be part of your problem.

John

[jfrancis49]

Hello Karl,

I am not a real savy tech person, but until someone with more knowledge steps in I will give you my thoughts on your problem. You should at least see a light on the control panel, left side for 33 rpm if the table is getting power when you push the start button. If the capacitors have not been replaced, they probably are the first thing to go after 40 some years. There is a fuse box in the back left side under the top plates that you could check. If a fuse was blown there was probably a good reason however.

Depending on where you live, there are people who could service the table, if you have no basic soldering and electronic skills that might be the best course of action.

John

[jfrancis49]

Hello Orava,

There are different places on the internet you can find them, I am not sure the moderators want us to post sources. But if you do a search for “Industrial Drive Timing Belts HTD 3M Pitch Timing Belt Width 30mm Open-Ended Transmission Synchronous Belts” you will find several sources, it is branded 3M but made most likely in China. It is available in different lengths and I would get more than you think you need. You will have to cut the 30mm to around 27-28mm width and cut the length based on an old 1600 belt. Getting a clean cut between the belt ribs for a good splice is the tricky part. That is why I would get more than I need. If done cleanly and straight you then use Gorilla Super Glue Gel and clamp it for 24 hours. I have done two belts and the seem is invisible. You can use WD-40 and a cotton swab to remove small amounts of visible glue.

I plan on posting pictures of the belts when I get the clutch washers installed. I have everything apart replaced the clutch washers, but am having issues putting the rod and parts back in the plastic housing.

John

[jfrancis49]

Thanks Martin, that was a big help! I now have the left side controls taken apart.

John

[jfrancis49]

Thanks for the reply Martin. I believe I understand that the couplings are the white disks shown in the photo here. But my guess is I need to disassemble this further than I have. Should I remove the screws shown in the first image and the plastic cover and the two clips that would be on each end of the clear plastic enclosure shown in the second image?

Thanks again,

John

[jfrancis49]

Thank you Mark and Sonavor! You pointed me in the right direction, it was the plastic rule for the sensor that was set to far to the left on the metal guide rail. After reading your posts I remembered that a week or so ago, I reset the rule because the tone arm was no raising automatically at the end play on one of my records. The beginning set down and end point seem to vary depending on the record so I must have over adjusted the ruler.

Thank you again!

John

[jfrancis49]

Hello Thomas,

Unfortunately I don’t have the technical expertise to advise you on this. But before I would trash it or give away the platter I would see if you could find someone to service it. Outside that non-working Beogram 8000 turntables still are worth abut on eBay. Someone else might be able to buy and fix it or use the parts to resurrect another nonworking one.

[jfrancis49]

Hello All,

I just finished adjusting the tracking sensor on this Beogram 4002 and outside of polishing some scratches out of the dust cover I hope it is completed. Thanks to Mark and his help and encouragement I was able to get a few stubborn problems worked out. The 4002 was in beautiful cosmetic condition but had a severely frozen tonearm and a non-functioning board. I was lucky I was able to replace some components and not have some serious trouble shooting.

John

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