[hcraig244]

Meanwhile the dust cover needs some attention, firstly clean all the old adhesive left by the tape fitted previously, IPA is the weapon of choice. I’m very reluctant to disturb further the previous attempt at a repair and have decided to attempt to reinforce it instead, trying to remove the epoxy glued screws would almost certainly result in more damage leaving less material to work with…some nylon matrix super glued over the cleaned up repair and some epoxy applied to the hinge on the underside….when I fit the new aluminium trim I will apply epoxy on top of the matrix and use the trim to further re-in force the repair….the main section of trim will be glued with aleenes tacky glue as I think that will be adequate.

 

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[hcraig244]

All the components now replaced….going to go ahead and replace the lamps in the control panel when they arrive from Martin, also the new pulley wheel to fit.

 

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[hcraig244]

Transport slider contacts next up…..the plastic actuators that operate these switches have caused me grief in the past…I foolishly put silicone grease on them which, given their very light operating pressures, where getting held up by the viscosity of the grease causing intermittent errors in the Boolean logic circuits of the control panel……was a long time realising the cause of that one!

 

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[hcraig244]

Using 2500 grit carbourundum paper, little more than rough paper, cleaned the control panel switch contacts both sides particularly on the << and >> switches, in the past I have unsoldered the whole assemblies and gold plated them before putting them back….more of an exercise in indulgence on my part than a worthwhile requirement….the work was chronicled here and is probably in the archives somewhere.

 

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[hcraig244]

pully

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[hcraig244]

Our friend has this for half the price….

 

[hcraig244]

Taking a look at the carriage drive pully, that is undoubtedly buckled, I notice a crack in the collar where the tightening grub screw sits….my guess is that this has been overtightened an some point and cracked…allowing the screw to be tightened further with nowhere to go except pushing backwards and warping the pully wheel out of true…while the crack was open I have gave it a coat of epoxy and let it close up again, will leave it overnight and see if its sorted…..the best this would be to replace it with one of the readily available (on ebay I think) aluminium wheels.

 

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[hcraig244]

When replacing the skeleton type trimmers I like to measure the active sides so I can set the new piher trimmers as close as I can for starters, those done and the caps replaced the board is complete

 

• This reply was modified 2 months ago by hcraig244.

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[hcraig244]

I’m suspecting the sticky squares belong under the two 2000uf caps……main PCB up next

 

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[hcraig244]

Happy with this and when tested all still working fine…..I have to confess to not knowing what the two sticky backed squares provided in Martins capacitor kit are for, new one on me….Martin?

 

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[hcraig244]

The two tricky tantalum caps in the multivibrator on off circuit board are also tricky to get out…..

 

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[hcraig244]

Big stuff first….lots of multiple connections in here, not a lot of room either….

 

• This reply was modified 2 months, 1 week ago by hcraig244.

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[hcraig244]

Sadly the dustcover isn’t doing so well…..been the subject of a repair in the past, still sort of holding together and I will reinforce the existing repair with additional epoxy….the new aluminium strip will lend more support when fitted as it isn’t foil, more sturdy material…..I would be asking around for a doner cover to replace it with, I think I heard of someone fabricating them but not looked into it?

 

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[hcraig244]

Control panel also looks in good shape….there is a tantalum capacitor hiding away in there that sometimes gets missed….

 

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[hcraig244]

The Beogram 4000

Internally looking pretty good, can’t see any footprints anywhere which is encouraging…pully wheel looks wobbly when running, may be buckled, but still works fine.

 

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[hcraig244]

All done and on test…….all three are now ready for collection….BG4000 next!

 

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[hcraig244]

noticed that the teflon/mylar strip for the spring lever has become detached, need to reaffix it…

 

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[hcraig244]

Dust cover fixed bracket is still fixed with the two sided tape…..decided to beef it up with some epoxy to make sure it stayed that way.

 

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[hcraig244]

Dust cover fixed bracket is still fixed with the two sided tape…..decided to beef it up with some epoxy to make sure it stayed that way.

 

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[hcraig244]

With some trepidation I connected everything up and gave it a test……all performed well.

 

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