Bang & Olufsen MX7000 CRT TV and User Guide
465Ultimate retro gaming CRT - user guide included below
The Beovision range of 4:3 standard definition CRT TVs are in my opinion some of the very best for retro gaming as I will explain in this video. The one featured is the 26.5 inch MX7000, featuring 2 x RGB Scart inputs, active stereo sound, great picture quality, de-interlacing function, full service menu adjustments and of course the iconic Danish design. Many believe these to be the most stylish CRTs ever made.
To enter service mode press MENU, 1, 1, GO. For anyone trying to get the service menu on an MX4200 the code is MENU, 0, 0, GO (not 1,1 as used on other sets). Press the right arrow on your BEO4 to scroll through the following. Use the up and down arrows to change a value.
Hfq - Horizontal frequency, Vertical hold. Adjust to avoid picture rolling.
Hph - Horizontal phase, Horizontal position. Higher values move image to the right.
Ham - Horizontal amplitude, Lower values increase horizontal size
Vam - Vertical amplitude, Higher values increase vertical size.
Vsc - Vertical s-correction, expands centre and compresses top and bottom
Vsh - Vertical shift, Higher values move the image towards bottom of screen.
Vli - Vertical linearity, compresses top, expands bottom. lower numbers squash the upper half height of the screen
EWc - East/West corner, shifts the top and bottom horizontally to expand corners. Higher numbers flare the top and bottom L/R corners outwards, lower numbers form a bulge in the middle of L/R sides
EWp - East/West parabola. To make vertical lines at sides of screen parallel with sides of screen
EWt - East/West tilt, trapezoid correction. Tilt the picture. Higher numbers tilt the picture clockwise.
Here are some useful "default" settings from my own MX7000, which you could try using particularly if you get into trouble. As all sets are different, you will need to customise your own settings for the best picture.
Hfq 26, Hph 55, Ham 22, Vam 30, Vsc 31, Vsh 20, Vli 20, EWc 16, EWp 20, EWt 48
You can only access service mode from the TV input (snow screen if you do not have an analogue RF signal on this channel). The inability to view the picture (on AV input channels) whilst altering geometry is annoying but not a game stopper.
You may only be able to access Service Mode with a Jumper Mod for B&O MX models with chassis revisions earlier than 3.1 as well as any MX series TV where you do not have a beo4 remote or beo4 copy. You will need to build a bridge across the jumper on the AV board. The jumper is located right above the inputs on the AV board. It's the first thing you'll see and it's clearly marked.
Chassis revision model is shown on the sticker on the rear of the TV. Look for SW 3.1 or similar version number, on the top right of the sticker. Any chassis with revision number 3.1 or later should have the preferred functionality and picture quality.
One of the most unique feature in this range of CRT TVs is their ability to take an interlaced signal (480i for example) which will typically look flickery and without clarity of scanlines, and to process this to simulate a 240p signal. Please see my other video on de-interlacing.
Bang & Olufsen MX series CRT TV discussion thread
http://shmups.system11.org/viewtopic.php?f=6&t=43861&start=150
faginrs500 video on MX4002 picture quality and telling the different software revisions - which will dictate how you access service mode
http://www.youtube.com/watch?v=fj6iGdWeXj0
faginrs500 B&O MX4002 chassis mod -- includes footage of making the mod you would need to bridge the service mode jumper on the back of the chassis get earlier chassis revision models into service mode.
http://www.youtube.com/watch?v=dg3H4RlW950
WARNING: These TVs are getting on 20 years old so be prepared that one might have or develop a fault.
Common problem: Standby light shows as red but the TV won't turn on (degausse). The faults are normally located on the main PSU board. You will need an expert to take the set apart and replace capacitors. Normally these faults can be rectified with fairly simple capacitor replacement so don't throw the TV out without finding out if you have any local TV repair shops.
The following guides are from the B&O archives. Even if you can't fix the fault yourself, this guide will help the TV repair people know where to look (if they don't already).
http://archivedforum.beoworld.org/forums/t/10557.aspx
This one is pretty similar and also shows you the common errors you get when starting the TV up in service mode, using the pins on the back
http://archivedforum.beoworld.org/forums/p/24571/191760.aspx#191760