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The BeoGram 3500, BeoGram 4500, BeoGram 6500 and BeoGram 7000 all had RIAAs fitted as standard.
And although not fitted as standard, RIAA may have been retro-fitted into the following:
BeoGram 3000, BeoGram 3300, BeoGram 5005, BeoGram 5500, BeoGram 8500, BeoGram 9000, BeoGram 9500, BeoGram TX
EDIT: And further research shows that a RIAA Pre-Amp module could also be fitted to BeoGram 1000, 1200 and 1800 (BeoParts (now: Danish Sound Parts) sell kit replicas of the original modules)
EDIT 2: I also just noticed that OneRemote sell an RIAA pre-amp that passes the datalink through, useful for datalink era non-RIAA Beograms such as BG9500: https://shop.oneremote.dk/shop/69068-riaa-amplifier/
I re-fitted the dust cover today, using small dabs of super glue gel at the right hand end (other side from laser) and found two small screws to hold down the left hand side where it had previously been sitting proud and rubbing the CD. Screws circled in red below (only one visible) – these weren’t there before, I think by design because the rubber suspension mounts should actually hold the cover down if they hadn’t been cut off too short. You can also see the glue below from a previous owner’s repair, in the hole from which the rubber suspension mounts should extend:
All is re-assembled now and CD plays nicely without rubbing.
The new laser arrived a few days ago while I was distracted with my ‘new’ BeoSound Essence.
Here’s the one that I ordered – one of the cheapest on Amazon and when I ordered I was given a further £2.62 discount for some reason, hence total of £30.12 with free postage from deepest China. It arrived in just six days.
https://www.amazon.co.uk/dp/B0D2D47SR8
I have just fitted it, using the helpful guide here: https://encosystems.net/instructions/cd-pro-2-with-opu2-vau-125411-31-31lf/
I put the re-assembled CD module back in the freshly cleaned ‘donor’ BeoSound 1 shown above and … it works perfectly!
Fitting was straightforward, only two things of note: Firstly, the two small screws holding the white nylon sledge guidance plan had stripped threads – luckily I manage to find some suitable replacements in the garage. This re-confirms a previous badly executed repair. Secondly I noticed a slight difference in the new laser module. The faulty module has a small metal spring that is designed to press against the metal sledge guidance shaft. You can make out the spring in this picture:
Whereas the new module has no such spring – picture shows sledge guidance shaft inserted:
The anomaly doesn’t seem to effect CD playback so far but I will test and monitor. By the way, I didn’t lubricate either guidance shaft or cog mechanism – just left it all as it was.
A final picture showing the laser module in place before I replaced the retaining clips:
I still haven’t replaced the CD dust cover to I need to find a way to fix that securely to the top of the CD mechanism, and the CD module suspension is still not secure, so unless I can find a fix I will have to be careful to keep the Beosound upright at all times.
Ah that is interesting. I already have 2 of those older rectangular IR receivers which came with MCL2A and MCL2AV. Of course they have bare wires rather than a DIN connection that the 1657 requires, but it’d be easy enough to fit one and I think I can see how I would wire it up on other thread you posted a link to!
You just need a 7-pin DIN plug. Here are the pin numbers from the soldering side:
Then the IR transceiver cables need soldering as follows:
Brown – Ground – pin 2
Green – 5v – pin 6
White – IR data – pin 7
Leave the yellow and grey wires unconnected.
Glad it worked!
I have often found them full of leaking batteries – clearly the owner never knew there were batteries fitted and probably thought that they were powered from the phone line. There’s also an A/V volume control that will clip onto the side of the Beocom 1600/2400/2500 landline phones – just add a 4.5v battery box to make a useful under table remote! (not the first time I have shown this photo! 😀)
