Pioneer PR-7820 :disc slipping on spindle

[cal50]

Does anyone know what part is needed to fix this condition? It's in my
Dragons Lair (original) and over time the rubber has converted to a
black goo. The player spind up to speed but the laser disc can not
keep up.

[Samuel M. Goldwasser]

cal50 <jbha...@gmail.com> writes:

I've heard that you can still order that part from Pioneer, but I use a
slice from a bicycle inner tube. And, if the LD is permanently in place,
you don't even have to worry about gluing it! :)

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[cal50]

I am game with the inner tube idea but right now I have no mental
image of what the original looked like or where it goes.
Is there any pictures posted of the part in question??

On Dec 12, 7:20 pm, s...@repairfaq.org (Samuel M. Goldwasser) wrote:

[bil...@yahoo.com]

On Sat, 12 Dec 2009 14:33:50 -0800 (PST), cal50 <jbha...@gmail.com>
wrote:

Did you try visiting the Tech Center at Dragon's Lair Project? Their
address is www.d-l-p.com If you can still get the conversion card,
you may want to replace the 7820 with a LD-V4000, 4400 or 8000. To the
best of my understanding, the 4400 and 8000 will give you a small
increase in seek/jump speeds and smoother transitions. Remember, with
all three of the machines listed above, you have a solid-state laser
projector, not a tube. I have heard reports that all three unit have
no problems spinning the aluminum-backed discs that were originally
intended for the 7820. If you can replace the 7820 with a newer unit,
it could increase the overall lifespan of your cabinet.

Take good care,

Bill N.
I-Con Science Fiction, Inc.
120 Peachtree Ct.
Suite 103J
Holbrook, NY 11741

[Samuel M. Goldwasser]

cal50 <jbha...@gmail.com> writes:

> I am game with the inner tube idea but right now I have no mental
> image of what the original looked like or where it goes.
> Is there any pictures posted of the part in question??

Under the clamper is a plate or disk. The rubber used to be glued as
a "skirt" around the edge so that when the clamper was in the down
position, the rubber held the LD tight.

It's called a "Rubber Plate Assembly".

[mscott]

Pioneer electronics has them in stock for for $43 as others have said.
http://parts.pioneerelectronics.com/part.asp?productNum=VXX%2D003

mike in Sacramento

[cal50]

I am in the wrong business when a rubber part hits $50 (without
shipping).
I am with Sam on this one and will start my field expedient repair.

Thanks guys.

[cal50]

It is alive..........

I had a block of Delrin (and a lathe) and turned a bushing to center
on the laser disc with the inside diameter in the mid range or middle
of the tapered,spring loaded clamp. I simply removed the clamp
assembly,put the disc on the spindle with the bushing and replaced the
spindle clamp and put the screw back. It spins up fine and does not
slip. This works fine because I am only using one laser disc with this
player and not swapping discs.

[aspe...@gmail.com]

I purchased a dozen of these about 11 years ago and they were around
$12 each back then.