What are you working on now?

[Guy]

I was about to give up on my dead BeoSound 4 today, having told my cousin that I can’t fix it.

However, I plugged it in for one last time – no response other than red light, and the glass door will open for control and CD loading.  Then I used the Beo4 to press SHIFT 9 0 2 5 8 and was surprised when this opened the Service Menu – very strange because this is not how the Service Manual says that the Service Menu is entered.  (The manual says MENU GO, then 0 0 GO.)

(The SHIFT 9 0 2 5 8 sequence is actually the button sequence for Service Mode on a BeoSound 1, and possibly other systems).

Anyway, the Service Mode is the first time I have seen anything on the display.  I can scroll through options, check SW versions and faults/errors*, but when I ‘test’ the CD it does not respond to test commands.

I have tried reset to default settings, and although this doesn’t make the system work, the next time I enter the Service Menu it goes to ‘initial setup’, starting with Language Selection (English).  The display then goes to … DAB AERIAL ADJUST and just locks up with that on the display until I power down.  There is a DAB aerial attached.

I’ll keep experimenting with the Service Mode but I am not sure how to proceed.

* Errors as follows – none are included in BS4 Service Manual decode list – but I’ll have a look in BeoSound 1 Service Manual:

NVEM: TP_MODULE_HW_ERROR_APOS (keeps re-appearing, even if I manually clear error)

VMEM:  As above plus MLSL_STATUS_ERROR (VMEM errors are cleared by unplugging)

Location: Warwickshire, UK

My B&O Icons:

[Madskp]

Guy wrote:

Then I used the Beo4 to press SHIFT 9 0 2 5 8 and was surprised when this opened the Service Menu – very strange because this is not how the Service Manual says that the Service Menu is entered.  (The manual says MENU GO, then 0 0 GO.)

(The SHIFT 9 0 2 5 8 sequence is actually the button sequence for Service Mode on a BeoSound 1, and possibly other systems).

Great work thinking out of the box, but very weird that this works. Maybe different software version did change something, but nok very smart in regards to servicing.

On thing that came to mind in this regard is, could it have been updated with a wrong software? Do you have a history of it being used before not working anymore?

Guy wrote:

NVEM: TP_MODULE_HW_ERROR_APOS (keeps re-appearing, even if I manually clear error)

VMEM:  As above plus MLSL_STATUS_ERROR (VMEM errors are cleared by unplugging)

I also looked in the BS4 servicemanual but could not find anything either. Then I tried a google search, and some references to the Beocenter 2 servicemanual came up.

Looking at that the MLSL_STATUS_ERROR seems to be ML related, but have different error types, so you might want to look that up to see if you can spot anything usefull.

Also a thread here with a BC2 with a similar error message, but no solution https://archivedforum2.beoworld.org/forums/t/36631.aspx

Being in the ML mindset I would suggest taking a good look at the ML connector to see if any legs are bent and touching each other. If not a survey of the ribbon cables between the socket board and the main board could be worth doing.

 

 

Location: Denmark

[Guy]

Madskp wrote:

On thing that came to mind in this regard is, could it have been updated with a wrong software? Do you have a history of it being used before not working anymore?

I’ll have to ask my cousin, as I am not at all sure about the history.  And, yes, the different software (at least for entering Service Mode) is very strange, so I will try to find out if it was changed.

Madskp wrote:

I also looked in the BS4 servicemanual but could not find anything either. Then I tried a google search, and some references to the Beocenter 2 servicemanual came up.

Looking at that the MLSL_STATUS_ERROR seems to be ML related, but have different error types, so you might want to look that up to see if you can spot anything useful.

Also a thread here with a BC2 with a similar error message, but no solution https://archivedforum2.beoworld.org/forums/t/36631.aspx

That’s a great find thanks, although strange that it’s a BC2 – pity there’s no solution.  On the third picture, under Product ID my BS4 says Pin: OK    But I can’t get to any pin menu to enter it, or turn it off.

I really don’t want to take it apart again, and suspect that it’s still a processor/locked pin issue, but I will have a better look at the BC2 service manual to see if anything comes to mind.  If I do take it apart I’ll be sure to have a good look at the ML and other connections.

My grandson has just arrived to stay for a few days, so it may be a while!

 

Location: Warwickshire, UK

My B&O Icons:

[H Casey]

I got a master control panel 6500, a Beocenter 7000, a Beocord 5000, a Beocord 8500, and a Beomaster 2400 along with five non-B&O tape decks and a couple receivers in a “Dude just wanted his livingroom back” $5 special. Not sure what works, I want to start in on testing and, if possible, repairing what I can. They’re a tad banged up but I’d really like to see if I can inject some new life into them and get them running!

Starting on the Beomaster 2400! Any advice is more than welcome as I’ve never worked with this equipment before. Sounds like I’ll want to start by replacing caps given its age and the blown fuse.

Location: Minnesota USA

[pl212]

That’s great — wonder what the MCP 6500 was used with, given that it’s not a natural pair for any of the other equipment?

There are some useful service parts available for the 2400 here: https://www.dksoundparts.com/product-category/beomaster/beomaster-2400/

Location: Silicon Valley

[beosince]

I cleaned the volume slider on my Beomaster 4400 as it worked not only as a volume slider, but also controlled the balance. Quite difficult to get to and open up, but works like a charm again.

• This reply was modified 5 hours, 35 minutes ago by beosince.

[Author]

Posts