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Dillen
ModeratorYes.
Martin
Dillen
ModeratorYes.
Martin
Dillen
ModeratorIs something rubbing og grinding? Does the belt touch the motor bracket?
Did you check the motor suspension rubber bushings?Read more here:
Martin
Dillen
ModeratorLubricating the belt?
Sounds more like an adjustment issue with the lid switch.Martin
Dillen
ModeratorFoam, where foam was used originally.
Repalcing with rubber changes the T/S parameters drastically.
If you only had the T/S to compare, you would never suspect it to be the same driver.Martin
Dillen
ModeratorWhich type of Beogram 1800?
The newer (flat belt);
Take off cartridge and store in a safe place.
Lift off platter.
Push tonearm so that its outer end is over the area where the platter was.
Losen two screws, one each side from below holding the deck alu surface (Beogram out
over the edge of a table one side at a time – don’t turn it upside down),
lift the deck surface plate gently and pull it towards you.
When you can reach below you can take up the small switch for the play button and unplug
a connector for the deck surface control buttons and take the deck surface off.
Now you can replace the belt and you can also inspect the motor bushings (replace them if they are still the original).
Put back in reverse order – watch out that the leads to the buttons aren’t trapped or sandwiched at the right side screw block.The older is a different story as the old belt is easiest removed by simply cutting it and pulling it out.
The new belt is placed around (under) the platter form above and, from below, using
a hook-like tool, fish it out and lift it on to the idler next to the motor.Martin
Dillen
ModeratorAre you in need of it?
Martin
Dillen
ModeratorCheck the filter capacitors and their respective resistors for the opamps in the analogue output stages.
Martin
Dillen
ModeratorTR17 C-E short?
Martin
Dillen
ModeratorThere could be many reasons, but that would be the first on the list.
Martin
Dillen
ModeratorDid you fit the correct type of capacitor for C2103?
It must be a blue Philips/BC axial. Nothing else can be guaranteed to work.Martin
Dillen
ModeratorWell done!
Martin
Dillen
ModeratorSince it does switch on, we can assume that the sensor pad circuit around TR21 is working.
The problem must be somewhere from R126 up to IC6. A broken copper trace, perhaps?
Have you checked R126? Those high-ohm resistors can go way high or even completely open.You could lift one end of R122 and R126 respectively and cross their connections to see if the FM5 pad will then give you FM4 and the problem moved to the FM4 pad.
Martin
Dillen
ModeratorSo the FM5 lamp never lights up – even while touching the FM5 pad?
Was this problem present also before you started work?
Before you replaced lamps?Martin
Dillen
ModeratorWill it switch to FM5, if you touch the FM5 contact pin on the main PCB directly with your finger?
Martin
Dillen
ModeratorThe “lead” is what remains of an original indoor AM antenna.
In reality merely a plug with a 3m lead.Here, most of the plug has gone missing, leaving only the lead and the pin.
Martin
Dillen
ModeratorBeovision LX2800 has a RS-232 serial interface for a printer in the form of a DIN socket at the rear of the cabinet.
See page 18 (and 42) here:
https://bnoservice.nl/handleidingen/beovision-lx-2800.pdfMartin
Dillen
ModeratorDillen
ModeratorIt could be an overvoltage problem on one of the supply rails.
Check for a shorted regulator. Begin with the one supplying the MM5450.
If so, repairs could be intensive.Martin
Dillen
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