faders problems

[eightballstudios]

hi i have d8b v5, and the last 8 + master faders
is forcing down when i force up some toimes the fader work, normali but when i change the p+age or work in desktop the fader down again... i alredy do the fader calibrating, and still the same anyano know what is hapen?

[sverred]

It sounds like you have the stuck faders issue going on. There's a thread in this forum about this issue.

The easiest soultion; There's a thing called the 'Ribbon cable connection correction procedure', where you check that all your ribbon cables are placed right. A slightly loose contact may cause problems for you. Read more about this in the database: http://www.sonido-7.com/d8b/maintenance.html#Post9

The not so easy solution, and my guess: If all faders (17-24 + master) force down and will only let loose if you pull them back and forth some times, but then without a working motor, you have to either replace a chip on the fader board, or replace the whole board. There is three fader boards in the d8b, one for faders 1 through 8, one for 9 through 16, and then the 17 through 24 + master board. The chip for the third board is known as AD8804, and is hidden under the 3rd or 4th fader of the board. It is kinda hard to do yourself, so it should be done by professionals. The chip itself costs only some USD, but the job might cost you. As Mackie doesn't sell these anymore, you'll have to find a used one. On Ebay these costs about 250 USD. Check out the trading-thread here and see if you can get a better deal:
http://www.d8bforum.com/phpBB3/viewtopic.php?f=2&t=240

[eightballstudios]

hi thank you i will try in first check the cables but in internet oi have a lot of AD8804 do you know here i buy one?? new?

[sverred]

I bought some at http://www.kingsunm.com/

[eightballstudios]

thanks you i check, i already check the cables, is weird because the faders work, just forcing down, when i force up they work manuali but work, is the chio? do you think? anyone already have this problem?

[eightballstudios]

if i have chanel in stereo for exemple, if i have 19 and 20 in stereo the two fader are down, when i force one manuali up, the stereo work in the desktop, but if i force the other fader... when work, the fader that already work down again.... is weird

[sverred]

Yes, this sounds very much as a stuck fader board (defective chip).

I had the same problem, and the symptoms are exactly the same.

[Crash]

I had an issue at one point where fader 6 was sticking at the top of it's throw. This is when I was still running OS3. When I upgraded to V.5, the problem vanished. It may be worth reloading the OS to see if that does anything, before you start dropping boards out of the unit. It may not help, but it it might be worth a go just to see.

[budman65]

I have an issue where faders 1-8 are forced down upon startup. No faders automate and when I change "modes", all faders force down (9-24 including Master will free when moved up and down). 1 - 8 will not at anytime in any mode. Could this be a master "brain" board issue or just the first fader board causing the issue. I have reseated everything and reinstalled OS..ver 3.0.

[anyhorizon]

Crash's suggestion of reloading the OS is a good one. Also prior to doing that, it is a good idea to flush all start up sessions (there may be several in different folders) down the toilet and let the d8b make a new one. Make a note of your preferences.

Peter