Beogram 3404 Spring-loaded dust cover woes

24 replies

I did the exact same thing with my lid.  I bought this new in 1980 and it still works perfect.  Can you tell me the procedure for putting the lid hinge back together properly?  Thank you in advance, Jerry

Martin (Dillen) posted some excellent repair instructions in the past. Of course, now I can't find the post, but I did copy the text to save for replacing my own dust cover. I didn't have any luck repairing the spring holders so I cast some in resin and I am using those now.

I took several photos of the procedure, but that many are far too large to upload.

Martin's instructions:

"Lay the large black hinge bracket flat on the table.

Place the three small shiny friction plates in place in the hinge bracket.

Place the dustcover in place and fit the spring to the hinge bracket at the center with a black plastic holder (with square nut), a screw and a washer.

Don't mind the springs ends at this point - just let them flap around as they please.

The spring has small curves at the ends, that needs to run in the grooves at the ends of the dustcover, so make sure the spring is the right way up, or it will run with the sharp pointed ends in the grooves and damage the grooves.

Then grab one end of the spring with pliers, twist it to upright position and set down the springs length inthe groove in the hinge plate (some hinge brackets have small tags it needs to go around and between) and the groove in the dustcover.

Often the spring will be able to sit by itself like this.

Put a black plastic holder with square nut in place, hold it with a finger or two while you lift up the whole assy and mount the screw and washer from the other side.

Same job at the other end.

Takes a little practice but it's a 2-minute job when you know how."


Thanks. 🙂

Placement of the friction brackets here:

Martin

Thank you so much for the help.

Thank you so much for the help.

Hi evereddie,

Thanks so much for the directions... I have read through them a couple times, and printed them so I can follow them step by step. I am still a little unclear, but hopefully.

Are the "friction plates" you refer to the parts that mount the black part of the dustcover to the turntable? If so... are the parts supposed to be mounted to the turntable first, or last once the cover, black back and tension spring are in place? If not attached to turntable at the beginning then not sure why they need to be in place as a first step?

Sorry for being so dense... but it is not clear to me how the tension spring interacts with the clear dust cover? A picture sure would help if you can direct me to one. I've been searching on the web, but can't see anything in enough detail.

I guess I can figure it out... I just hat to make unsuccessful attempts in the learning process as that increases the likelihood of breaking something.

But THANKS AGAIN for all your help!!

David

Hi evereddie,

First, thanks for your response... here is where I'm at...

My cover does not seem to have any "friction plates" as mentioned. But I created these three images to show what parts I have, and to show how I believe 1) everything is supposed to be set up; 2) when the tension spring is torqued (top closed), and un-torqued (top open), and 3) which way the curve end on the spring should be pointing (so that the curve is in the groove on the dust cover, and the end is facing away from the dust cover (into the the black hinge bracket when closed). Could you please verify and correct my assumptions as needed. As far as parts, the spring holders go in to hold the spring in place, and the hinge brackets go in to hold the black hinge bracket to the turntable (attached once the dust cover is attached to the hinge bracket with the spring torqued and in place).

By the way, for other readers, the three torsion brackets are what was broken for me, they split right below the screw hole (i.e., the weakest part of the bracket). I used the two-part J.B. Weld epoxy that has over 5,000 psi of strength and a C-clamp to glue them back together (shown after fix in parts image - may be hard to tell, but they are epoxied, look for thin grey line). J.B. weld is pretty tough stuff, you can even use it on engine blocks and drill and tap threads for screws into it, so I hope it will work here just as well _/\_

Thanks tons for all your help!!!

David

 

 

Hi evereddie,

First, thanks for your response... here is where I'm at...

My cover does not seem to have any "friction plates" as mentioned. But I created these three images to show what parts I have, and to show how I believe 1) everything is supposed to be set up; 2) when the tension spring is torqued (top closed), and un-torqued (top open), and 3) which way the curve end on the spring should be pointing (so that the curve is in the groove on the dust cover, and the end is facing away from the dust cover (into the the black hinge bracket when closed). Could you please verify and correct my assumptions as needed. As far as parts, the spring holders go in to hold the spring in place, and the hinge brackets go in to hold the black hinge bracket to the turntable (attached once the dust cover is attached to the hinge bracket with the spring torqued and in place).

By the way, for other readers, the three torsion brackets are what was broken for me, they split right below the screw hole (i.e., the weakest part of the bracket). I used the two-part J.B. Weld epoxy that has over 5,000 psi of strength and a C-clamp to glue them back together (shown after fix in parts image - may be hard to tell, but they are epoxied, look for thin grey line). J.B. weld is pretty tough stuff, you can even use it on engine blocks and drill and tap threads for screws into it, so I hope it will work here just as well _/\_

Thanks tons for all your help!!!

David

 

 

link

I think you have a pretty good grasp of how the spring functions.

The spring needs to fit into a couple of spots that might be overlooked. There is a small "dot" that the spring needs to fit around on both sides and there is a "hook" that the spring needs to fit under.

I have attached a couple of photos that I hope will show those points.

The little L-shaped pieces fit between the plate and hinge providing the interface. Martin attached a great photo that shows them in position.

 

 

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