8mm Forum: Help with my Bell and Howell 8D 644

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Topic: Help with my Bell and Howell 8D 644

Arturo Glez
Film Handler

Posts: 65
From: Barcelona, Spain
Registered: Feb 2015

posted July 02, 2016 07:47 PM

Dear Friends, I need your specialist help,

I have bought a very cheap B&H 8D 644 withouth power cord, the previous owner told me that seems is in good conditions of functioning.

Before buy the power cord I want prevent a budget to fix it:

The projector external elements are very clean, and seems have all pieces.

I opened the back cover and I saw:

See here:

http://subefotos.com/ver/?269c055e61de0623b47fa0a7e49af285o.jpg

I saw this problems:

FRAMER

The framer button does not move in any direction, is like locked, the impression that I have is like stay “with glue” (only my impression) I do not want make extraforce because I do not want to break it.

See here:

http://subefotos.com/ver/?39dd08117e14b4f7f5e038b08969cdd8o.jpg

http://subefotos.com/ver/?26e35fc23b2667f1cd0c5997a150a580o.jpg

https://youtu.be/wRCzsywynCY

-My doubt is: Maybe the framer function works when the projector is running? Or maybe is damaged? I opened the back cover but I am not able to see the framer mechanism.

MOTOR BELT

The motor belt stays in his position but with a little cracks, soon will broke maybe after minuts or few hours of functioning.

-Exists this belt as spare parts?, I did not find it in internet.

See here:

http://subefotos.com/ver/?43d860e05cf398769bb55476ebb58cado.jpg

BULB

The projector arrives with bulb, but I do not know yet if is good or not.

What type of bulb,lamp needs this projector?

The inside big bulb has a slightly swollen in right hand ,and on the right of the bulb there are a circle mirror (lamp reflector) that seems have a little crack or line over the middle of the piece, or maybe is normal?

-Will affect this “crack” to the projection? Or maybe is normal I do not know.

See here the element I refer, on the right of the bulb

http://subefotos.com/ver/?abb7a1478aabd08cf1497f0c652f5442o.jpg

http://subefotos.com/ver/?5720d6568a2c3737ee8436516d6a3aaco.jpg

On the other hand, the bulb in her right part, have a little swollen, maybe by the hot of using time ago, maybe is not operative the bulb,see here:

http://subefotos.com/ver/?6a7ae8dd4c0c6fc905a02838ed16feb8o.jpg

If you have a comment on this aspect, I will appreciate.

INCHING KNOB

When I took of the back cover, I moved the Inching knob manually in both directions and the motor runned slowly and the another upper toother wheels run too, but only they are in movement for a little.If I continue moving the inching knob I hear a sound like “hard to continue moving” and after a half minute the upper toother wheels run a little.

-Is normal?

See here the videos:

https://youtu.be/nhyjoPyeUTc

https://youtu.be/C_iWH9kYSbk

THREADING THE FILM

I noticed that witouth connect the projector, trying put the film is hard to do.

Beause the right reel does not move a lot, is necessary force it, see video, is normal?

See here the videos:

https://youtu.be/FxsZxPFuxTk

https://youtu.be/vjz4_MqOYwQ

Here different pictures of the inside of projector:

http://subefotos.com/ver/?194f50cffcfd93733e4d3659d7360d7eo.jpg

http://subefotos.com/ver/?351d9bb06e3b5ea3e0f87e4b4bd30069o.jpg

http://subefotos.com/ver/?9afdae4dbcd502c31999896bfacf8cabo.jpg

http://subefotos.com/ver/?6fc0bc8dee32ec127464e8aef61641e0o.jpg

I did not check the valves, but this is no problem for me, does not matter if the projector runs without sound, the important for me is that works more or less well.

What is your opinion? Is it possible to solve it this things? Would be my first reparation,by myself.

Is it worth? or better I leave the projector as ornament?

I would like fix it by myself, I think the worst problem is the framer button that does not move in any direction, seems put with glue over the projector (my impresion)

If you want help me, please leave your comments or possible solutions, thanks a lot in advance, I really appreciate it, kind regards,Arturo.

[ July 03, 2016, 08:02 AM: Message edited by: Arturo Glez ]

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David Fouracre
Expert Film Handler

Posts: 123
From: Staffordshire, United Kingdom
Registered: Aug 2013

posted July 03, 2016 07:29 AM

Hi Arturo

Having looked at your pictures I would suggest that if the actual film path is in a similar condition to the mechanism pictured, I would not risk running any print! A very close inspection of any part in contact with your films is vital.

Might prove better as an ornament.
Good luck.

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Arturo Glez
Film Handler

Posts: 65
From: Barcelona, Spain
Registered: Feb 2015

posted July 03, 2016 08:14 AM

Hi David, thanks for your opinion and your time reading my request, the external film mechanism is very clean and all seems in good condition.

See here:

http://subefotos.com/ver/?3c8e54e5095f43b466189a6ea453e959o.jpg

Regards, Arturo.

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David Fouracre
Expert Film Handler

Posts: 123
From: Staffordshire, United Kingdom
Registered: Aug 2013

posted July 03, 2016 10:53 AM

Arturo,
Open the gate, swing out the lens and inspect the surfaces for the filmpath within the gate. Look at the guides and sprocket pads. These need to be bright,clean and polished.

In your video rotating the drive by hand, the clicking noise MAY be related to the Nylon covered worm drive gear. There are what looks-like dark marks on the worm, which could indicate a cracked
drive.
This would be a common failure on B&H machines.
If this HAS failed, then I would not suggest a home-repair attempt.
Check it out and report please
David

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted July 03, 2016 11:15 AM

Arturo
This projector could be over 50 years old and appears that its lubrication has dried out over this time. There are many other problems which may also be inherent, such as a cracked worm drive, and not the least, no mains lead.
My suggestion is to try and find another projector which the seller says is in fully working condition.

--------------------
Maurice

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Barry Fritz
Phenomenal Film Handler

Posts: 1061
From: Burnsville, MN, USA
Registered: Dec 2009

posted July 03, 2016 12:17 PM

Arturo:
If you do plan on buying another projector, ask the seller if it has been tested with film and that all functions, incuding the sound, are working as they should. Many sellers turn on a projector and if the lamp lights and they hear the motor running, they will say that it is in working condition.

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Arturo Glez
Film Handler

Posts: 65
From: Barcelona, Spain
Registered: Feb 2015

posted July 03, 2016 12:23 PM

Dear friends,

First of all thanks for your reply and advices, I share your opinion.I have news about the situation.

This afternoon, following the service manual, I put power (with no original power cord) and the motor runs, see the little video (i did not want exceed the motor running):

https://youtu.be/vJzdlh9cZrY

The lamp was tested out of the projector and lights.(because i do not have original cablea but I will get it)

At this moment the belts survived and all the film passed well.

My reflexion is get the original cable and test all.

CURRENT PROBLEMS:

Poor lubrication Try lubricate it?

Motor belt with little craks (try get another one)

The best problem: I can not move the framer button is blocked, I do not know if is because i do not have all the power options with the original power cord.

The previous owner told me that the projector was ever functioning well but years ago.

What do you think about the framer problem? Is important for me.

You are helping me in the distance, and see here, who is helping me...

http://subefotos.com/ver/?d78f33df942f203b5517bd36a965c578o.jpg

I will keep you informed.

Kind regards, Arturo.

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted July 03, 2016 01:55 PM

I would suggest that lack of lubrication is inhibiting the turning of the framer control.

--------------------
Maurice

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Arturo Glez
Film Handler

Posts: 65
From: Barcelona, Spain
Registered: Feb 2015

posted July 03, 2016 02:17 PM

Hi Maurice, thanks for your advice, maybe you are in correct way...

I will try search how works in the service manual and try solve it.

If someone here know how to do it, I would appreciate a post.

Regards, Arturo.

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