Rich wrote:

chartz wrote:

Now you really have to fix your deck...

NOT fixing this deck is NOT an option...

Thats the spirit, and keep us informed, and when you finish, we want to "hear" Frankie goes to Hollywood, with your new cartridge.

Keep at it Rich, and good luck.

Hi Guys

@ Rich

Reading this thread has been invaluable. I've also got speed problems. 33.3rpm runs abt 3-5% too slow at max + adjustment and 45rpm hoplessly slower than 33.3rpm. So it appears it could be that relay on board 8. I have already had the relay out to clean the contacts better, using 2000grit 3M abrasive paper. This didn't help much and the ordinary paper pull through will have to be done. I have also noticed a strange, brown crumbly crust below the relay. Not sure what this could be.

Btw, be careful with the motor. If you remove its rotor, be very careful with bend or break damage to the brushes. Push the brushes away from the commutator with a toothpick and the same on re-assembly.

Also, the motor will only spin in one of three locations of the metal housings. Mark them before separating.

andre/dauphine 

Søren Mexico wrote:

Rich wrote:

chartz wrote:

Now you really have to fix your deck...

NOT fixing this deck is NOT an option...

Thats the spirit, and keep us informed, and when you finish, we want to "hear" Frankie goes to Hollywood, with your new cartridge.

Keep at it Rich, and good luck.

 

Just to keep everyone up to speed:

I have purchased two BG3404s from Ebay, one sans cartridge and one with an MMC20EN.  Between the two of these decks, I hope at least one works well enough for awhile, because....

The BG4002 has been sent off to a professional.  Said professional has finished work on my BM4000 and I should be receiving it this week.

So look for a new thread from me soon when my system is (almost) back up.

Andre personally I do not use anything abraisive on switch contacts in general ESPECIALLY if I cannot see what I am doing.  The contact could have a thin plating that might be completly removed by said method so best to use a gentler method or replace the relay altogether.

Regarding the brown stuff is it foam that has deteriated...?

Relay (and most switch) contacts always have a surface plating. Remove it, and the relay may work for some time, but depending on the current the contacts carry, it may only last a week or two before you're back at the beginning. If it won't work after non-abrasive cleaning (isopropanol and pulling a rough paper through between the points), you'll need to replace it - the points are worn beyond help.

But if the points have oxidized due to lack of use in storage, simple cleaning or just exercising the relay a number of times may bring it back to operation. For example the muting relay in my Beomaster 6500 was acting up when bought it. I never got around to replacing it - now more than three years later, it's still in there, and doesn't give any problems at all!

OK, here's my 2 cents worth 😕

Firstly, you're all doing a great job! Keep it up.

Secondly, here's a link to a similar relay V23012-A2105-B001.

"I have also noticed a strange, brown crumbly crust below the relay. Not sure what this could be."

It's the remains of the cork insulator between the relay and the PCB.

Your relay was running HOT, and so it "cooked the cork"  

To prevent damage to the PCB, it's advisable to insulate the relay from the PCB with some other substance about 1mm thich, maybe bicycle inner-tube rubber.

Menahem

Look what came to work today.

Step 1:  pour some home brew.  This particular home brew I call "Black and Tan Your Hide."  It's a blend of a brown ale and an Irish stout with added "booster" to take the alcohol content up over 6%.

Step 2:  open box.  Benny Amina of Modular Electronics fixed the BG4002.  He had me remove and not send the dust cover, top platter, and cartridge.  With the dust cover removed, I found this box in my garage and fixed it over the tone arm.  Aside from engaging the transport screws, that was pretty much all the precautions we took in shipping the BG4002 between Orlando, FL and Atlanta, GA.