Hi and welcome!

From what I can see in the service manual on the site, there is no simple Service Mode like that found in later B&O TVs.  It's a case of adjusting potentiometers etc whilst viewing a test signal.  I don't recommend this  unless you know what you are doing!

There is a Service Counter menu that you reach by going to the Set Clock menu and inputting:

Time: 33:30 am

Date: Mar 16 3250 Thu

and then pressing Play, whereupon you will see various timers.

Apparently if you then press 2 an 'OSD colour adjustment picture appears', but I doubt that you can do much with it without digging further into the electronics.

Thank you so much for a fast answer! I don’t think I’ll be digging into the actual hardware to change anything no! But I can try that tip with the clock setting, I guess setting the clock is described in the manual.

How I wish these old TVs had an easier service menu! I know it’s a really old set, but it looks so cool and the picture is nice.

Not finding the set timer section in the remote manual. Is it a special button on the controller?

This looks like the American version of the MX5000,it used a different chassis to the UK version.

It does have a service mode,but I don't think there is a horizontal picture shift option.

You seem to have the manual,so there is a full explanation of how to get into the service mode,and what can be adjusted there.All the adjustments are done with Beolink 1000,via onscreen menu's

The service mode link is on the pcb shown in your picture.It's marked there as P700( service mode)and is just above ,I think the left hand Scart connector.

Take great care in there sir!!!

Nick

ResidentDante wrote:

Not finding the set timer section in the remote manual. Is it a special button on the controller?

If I have the right model of TV (noting Nick's response) then you should just press TV then MENU, and SET CLOCK should be third in the list.

solderon29 wrote:

This looks like the American version of the MX5000,it used a different chassis to the UK version.

It does have a service mode,but I don't think there is a horizontal picture shift option.

You seem to have the manual,so there is a full explanation of how to get into the service mode,and what can be adjusted there.All the adjustments are done with Beolink 1000,via onscreen menu's

The service mode link is on the pcb shown in your picture.It's marked there as P700( service mode)and is just above ,I think the left hand Scart connector.

Take great care in there sir!!!

Nick

I just can't see the P700 markings anywhere, I've looked closely and can't see them.

I don't it's  the US model as it's bought here in Norway, the label on the back is like this:

Guy wrote:

ResidentDante wrote:

Not finding the set timer section in the remote manual. Is it a special button on the controller?

If I have the right model of TV (noting Nick's response) then you should just press TV then MENU, and SET CLOCK should be third in the list.

Ah, my menu button brings up this super primitive selection of Timer on/off and two boxes to designate the two AV1 and AV2 ports to Sat, v.tape buttons etc. on the remote.

I think that a Type 3261 may be an MX5500.

In the MX5500 service manual it says to remove rear panel, press TV and short circuit the service mode plug P48 on PCB5 - which is the PCB in your photo.  According to the manual it is bottom-right of the PCB.

EDIT: I just opened up your photo full size and can now see the 2 pins!

Top tip - take photos of each screen before you start mucking around with service mode settings, then you can always revert back to what you had!

Thanks so much!! I will test this out, those pins really do look like the right ones too. 

Guy wrote:

I think that a Type 3261 may be an MX5500.

In the MX5500 service manual it says to remove rear panel, press TV and short circuit the service mode plug P48 on PCB5 - which is the PCB in your photo.  According to the manual it is bottom-right of the PCB.

EDIT: I just opened up your photo full size and can now see the 2 pins!

Top tip - take photos of each screen before you start mucking around with service mode settings, then you can always revert back to what you had!

So an update and a big thanks here for the great help I got! It's not easy finding any info on this TV elsewhere than on this forum.

Here's a little guide for those that search up this topic at a later point in time:

1. Unplug TV and remove back cover, four screws in each corner. Pull the back cover straight out back, no bending up and away, get the back cover far out and away from the neck of the tube inside.
2. Plug in the TV and turn it on TV mode. Don't touch ANYTHING in the back except, the two little pins for service mode. Use a tip of a screwdriver to touch both and hold it there for two seconds. Here is a pic of the back panel and the pins close up to the right of the AV1 port: 
3. On your screen the service mode will appear! Here's what it looks like:
4. Picture setup lets you alter colours etc. Geometry menu lets you fiddle about with the actual placement of the picture, as I was using RGB SCARTS from my old gaming consoels the picture typically centers itself too much to the left, so I had to alter it too the right by increasing the H Phase number. Take a note or pic of all the settings before fiddling about! Here's what that Geometry menu looks like:
5. Press quit and your settings are saved. Safely turn off TV and put that back cover back on!

Here's a handy little guide for those Geometry settings:

Hope this helps other MX5000 owners!