Dear all,I recently purchased a Beomaster 6000. Cosmetically It is quite shabby looking and too add to this it wasn’t packed well and the circular wheel section of the aluminium of the front end (PC no.1) is really damaged. I have flattened it a bit, but it will never be entirely flat. The acrylic is scuffed and scratched as would be expected. I initially I did manage to get some sound from the phono, Tuning FM, radio presets and aux 2. The radio was bright and full sounding. It initially took a while to awaken. The Phono using the beogram CD4 Board with a MMC 20S cartridge worked but the sound was a bit muddy with a lower output of sound compared to the Tuning FM/ AUX/ settings.The start of the real problems…I turned it off at the switch at the back and It shorted something when I added another set of the speaker connectors. (There seems to be residual power for a few seconds, therefore I should have turned it off at the mains and waited…). Now none of the outputs play audio. The only sound is a click/ thump sound through the speakers and a few seconds of audio when standby is initially pressed.None of the lights bulbs are powered on the PC12 - motor control. This problem existed before I shorted the audio output. Three of the bulbs illuminate through an external 9V battery. The motor activates when any of the command buttons on (PC 12 motor control) are activated on.Only three of the clutch disks activate when standby is pressed or when the individual channels are pressed: Volume, > Also when pressing TAPE on EL Switch - PC No.8 after any other setting i.e -Aux2 and Q4 both sets of lights stayed illuminated I. AUX2 and TAPE; Q4 and TAPE Therefore there seems to be a problem with power reaching part of (PC 12 motor control).Finally were the set of unused leads pictured in the yellow sheath not wired to enable an upgrade on the machine at a later date?Any advice suggestion would be welcomed. I have read archive threads and Beolovers blog. Another member mentioned that they also had no power going to the bulbs on the (motor control board 12) but the thread took another direction...Kind regards,Struer Login to view image
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Beomaster 6000 (type 2702) faults
35 replies
There's a lot going on there......your going to need to tackle one at a time.....the black wires all tied together are almost certainly ground connections that have broken away, these single strand wires are a menace in this unit and are constantly coming loose....they will also be responsible for some of your problems, they should all ne tied/soldered to a central point close to where they are right now...do you have a circuit diagram?
Craig
Thanks for this. Funny you should mention the grounding issue. On a closer inspection last night I discovered the initial source of the wires. I will resolder now. Kind regards Login to view image Login to view image
Yes that looks right....also check the four big output capacitors.....i have found these failed due to corroded connections and out of spec.
Craig
Hi again, I have soldered the three wires to grounding terminal. I am getting and learning all the pitfalls of this system that I’ve read about. When turning on the power again one of the Darlingtons blew (MJ3001) and the red resister beside it. I will order some more Darlington and persevere aware of the complexities with this repair. In the meantime, thanks.One question would you or anyone else on here have an up to date Capacitor list for one of the main suppliers? Login to view image Login to view image
I suggest you repair the current issues before eventually doing a recap.
Martin
That power output board will have bowed over time and that's possibly why it has shorted out against the support, in one of my repairs I inserted a sheet of thin mylar the same size as the output board between the board and the metal support to prevent this happening.....
Craig
Have a look at this thread for a little more information
That makes total sense as recapping at this stage will most likely add to a chain of more faults.
My main issue for wanting to buy modern equivalent capacitors and transistors in one go is that all the main companies charge a handling fee up to a certain amount + shipping + VAT.
Also i will send you a DM you regarding a kit for the Beomaster 2400/ 1900.
Kind regards,
Struer
Yes, you are correct, the board is bowed when i examined it. I am going to order some MJ3001 most likely from CPC.
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