Beogram 1500 ( The 'new' one)

14 replies
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PWH (archived2)
Bronze
Posted March 23, 2020 at 20:26 GMT
#2226169

I have one of these on which I cured the sticky lift mechanism and it now runs OK at the right speeds But..

The stylus seems to swing like a pendulum from 6 o' clock to 7 as the record tracks. Occasionally the record gets stuck and if I push the arm gently to centre the stylus, the sound levels balance up.  Tracking weight is set to 1.5g and anti skate minimum - no tension on the spring.

It seems as if the horizontal swing is slightly impaired.  Looking underneath, there is a wire which pushes a slider to the center which seems to have to lift up a plate which operates the return mechanism. This seems odd as this entire mass has to be moved by the stylus and would impair movement. Should this be lubricated or super clean?

Has anyone seen this stylus swing before? Am I looking in the right place? Perhaps the lateral bearings are sticky

Thanks

PR
Offline
ProGram
BronzeFounder
Posted March 26, 2020 at 11:21 GMT
#2226170
Hi,

The rod you mentioned must slide without lubrications and free, but only during play. While automatic is working and also in stop position, the plate above the plastic end should hold the rod in place. When playing, this plate is lifted a little.
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PWH (archived2)
Bronze
Posted March 27, 2020 at 23:32 GMT
#2226171

Thanks for the reply. I'll clean it up and report back

P(
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PWH (archived2)
Bronze
Posted March 31, 2020 at 23:28 GMT
#2226172

Cleaning up the rails and plastic part  has improved things but the stylus still swings from side to side. It has been suggested that perhaps the cartridge suspension has failed?

PR
Offline
ProGram
BronzeFounder
Posted April 1, 2020 at 08:17 GMT
#2226173
I believe, the MMC20 pickups fail rarely. There must be something wrong with the tonearm bearing.
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PWH (archived2)
Bronze
Posted April 1, 2020 at 23:55 GMT
#2226174

Thank you. I think the bearing needs lubricating.

Hopefully someone has done this before and its possible without dismantling the whole arm.

PR
Offline
ProGram
BronzeFounder
Posted April 2, 2020 at 08:13 GMT
#2226175
Before you do this, can you post a video with the starting cycle and playing?
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PWH (archived2)
Bronze
Posted April 5, 2020 at 00:21 GMT
#2226176

ProGram wrote:
Before you do this, can you post a video with the starting cycle and playing?

I think the files are too big. Is there anywhere else I can send them?

 

PR
Offline
ProGram
BronzeFounder
Posted April 5, 2020 at 06:04 GMT
#2226177

You might post in on Youtube and post the link here

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PWH (archived2)
Bronze
Posted April 29, 2020 at 07:26 GMT
#2226178

I don't have a youtube account.

The start sequence is smooth without any sign of binding.

It was completely siezed when I got it, so maybe I have missed some gunk near the bearing?

 

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