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  • Re: MX4000 Repair

    Some good news. The MX4000 is now fully functional! Thanks to all that posted here (and via email) for help and guidance, FYI, the error is B6 and i never did find out what that error was. I finally repaired the switching off issue, by re-capping board 13. I ended up thinking, id just re-cap every board and then check transistors, diodes, however after i recapped the U shaped board (which fixed the onscreen menu colour bleed) I run out of many capacitors, i had just enough to complete board 13 -
    Posted to The Workbench (Forum) by dabbler on Sun, Aug 4 2019
  • Re: AV9000 keeps turning itself off!

    Was this set ever repaired? I am repairing a mx4000, which has exactly the same symptoms and last error B6. So far ive recapped the power board and the video board (fixing an issue with the onscreen menu) however its still switching itself off and has B6 as the last error code!
    Posted to The Workbench (Forum) by dabbler on Wed, Jul 31 2019
  • Re: MX4000 Repair

    As a test, i killed the power to the set. Error code was "Last error no", it then switched itself off. I powered it back on and re-entered the service menu, the last error code is again B6. I wish i knew what this meant!!! Also to note, when it switched itself off, it makes a slight "pop" like a static discharge of sorts (from the speakers), when i switch it off manually it doesn't do this..
    Posted to The Workbench (Forum) by dabbler on Wed, Jul 31 2019
  • Re: MX4000 Repair

    I cant find any reference to B6 at all. Any ideas please?
    Posted to The Workbench (Forum) by dabbler on Wed, Jul 31 2019
  • Re: MX4000 Repair

    Well I recapped board 14 and now the onscreen menu is sharp and correct - great. Alas it still switched itself off :-( One problem fixed. Main one still outstanding. At least I can read the code's now :
    Posted to The Workbench (Forum) by dabbler on Wed, Jul 31 2019
  • Re: MX4000 Repair

    Thanks for the reply! I have PCB14 out now, it looks ok - still im going to re-cap it, reflow anything suspect and see if that makes a difference. Fingers crossed!
    Posted to The Workbench (Forum) by dabbler on Wed, Jul 31 2019
  • Re: MX4000 Repair

    14IC9 Video Controller (14IC9 means Board 14 Chip IC9), this is a TEA6416 by ST. It is a video matrix ic. Should i replace the chip, or does the B&O error codes suggest this has an issue due to other factors, caps etc? Im not sure how to proceed so any help would be great, Thankyou
    Posted to The Workbench (Forum) by dabbler on Sun, Jul 28 2019
  • Re: MX4000 Repair

    Ive noticed another issue that i didn't notice before regarding the on screen menus, they appear to be bleeding and have colours missing (i didn't know it wasn't supposed to look like this - its my first B&O set!) - this is the onscreen menu only, the teletext display is 100% perfect. Click for larger image: Ive enabled the service menu, and its very hard to read the code due to this problem, turning the contrast / brightness up im just able to make out the last error code, which
    Posted to The Workbench (Forum) by dabbler on Sun, Jul 28 2019
    Filed under: mx4000 turns off
  • MX4000 Repair

    Hi, I hope some one can advise me on a repair im trying to complete. I picked up a MX4000 and it has the following issue: Switch it on, after a couple of minutes it goes into standby, the standby led is on. You switch it back on and after a minute it will go back into standby, this repeats and the time to go into standby from on decreases. I took it apart thinking maybe a powersupply issue, someone in the past has already reflowed nearly all the PSU board components (hmmmm) any way, i reflowed again
    Posted to The Workbench (Forum) by dabbler on Sat, Jul 27 2019
  • Re: MX4000 - Switching off

    Ive now replaced: c32, c130, c61, c137, c31, c29, c132, c82, c100. c44. c120. c121, c131, c134, c46, c48, c53, c52, d82 and tr33 The problem still exists, does any one have any thoughts please? Its driving me mad! Thankyou
    Posted to General Discussion & Questions (Forum) by dabbler on Sat, Jul 27 2019
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