Re: MOTU Traveler mk2 and power supply

yeah, square wave is really disappointing... btw, let's see after mods... probably next week (I have other urgent things to do before...)

I tell you, your customer should use the "MOTU FireWire and USB Audio Driver 3.6.7.4" and NO NEWER ONES!!! The newer ones make weird stuff happens (glitches, clicks, out-of-sync, "christmas" LEDs, etc.). I've found them on a CakeWalk forum (if I remember well!)

LOL! I've bought a lot of used HP stuff on eBay... about all of them coming from US Army... so they...

Re: MOTU Traveler mk2 and power supply

Oh, that's seems a decent price for such a useful tool! Thanks!

I've attached some photos (output) and hardcopies (inputs) of the original Traveler... just to laugh

yeah, first time for me too... that I see a pad that raises noise... but... look at the hardcopies... it's real! There's really something wrong in the analog part... s***! I really HATE when manufacturers try to squeeze 0.01 cent gain and mess up everything!

Continuing measuring...

PS I've used a HP3325A synthesizer and a HP1980B...

Re: MOTU Traveler mk2 and power supply

Nice SMD rework, Th3_uN1Qu3! I'm thinking about buying a hot air gun... that doesn't break my poor wallet!

BTW, I'm taking a lot of measures on the original Traveler (before capacitor / opamp modding) with a HP3325A generator and SpectraPLUS software for graphing. ... in short, the (input) opamps are quiet, but they're TERRIBLE on slew rate and overshoot! That's probably why the sound is lamented as "muddier" by a lot of users... btw, I've found not much differences between mic channels and line in channels... they sucks...

Re: MOTU Traveler mk2 and power supply

Hello toasty

Well, I'm using MOTU h/w from 15 years at last... and they wasn't so bad about PC (even if people says that they're Mac-oriented) - they've messed up things since CueMix *FX*... hope they read some forums, get the picture and roll back the kernel to the working version! Anyway, for the moment. everything still OK with old drivers... no more glitches and erratic LEDs...

Now that the stuff is all opened up on my lab table, I'm goin' to replace all the s**tty caps and especially the super-s**tty opamps......

Re: MOTU Traveler mk2 and power supply

Well, after a long experimentation & googling on a lot of forums, this is what I discover:

- DON'T USE LATEST DRIVERS!!! They will f*** up everything (speaking of FW connection)! I've restored the (best) 3.6.7.4 and now everything is perfect! No more flashing LEDs and no more audio scratches / hiss / out of sync issues!

So, I've returned to the drivers of (about) 2 years ago and also restored the original XP SP3 firewire drivers (I was using an alternative, thesycon, but don't work anymore with the old drivers!...

Re: MOTU Traveler mk2 and power supply

Well, at last it seems some XP drivers gone mad... but I can't understand why it has been working for so long without problems... at this point, I think there's something really critical on the board, and a 0.000001% variation in the firewire protocol make the device goin' mad.

Tapping all the chips in the FW zone does nothing, btw. Thank you to tell me that reflowing does nothing, I was about to put the damn thing in my oven

When used offline, there's no strange behaviour at all...

BTW, now that everything...

Re: MOTU Traveler mk2 and power supply

Hello Th3_uN1Qu3,

just come across this topic and I think maybe someone can help me!
I'm repairing a Motu Traveler (I think Mk2, for sure it isn't a Mk3) that sometimes goes berzerk (i.e. strange noises on the outputs, like digital clicks, and front panel LEDs goin' mad)

I'm trying replacing some caps, but no luck (btw, ESR on the original caps seems to be good)

Do you have your Motu handy? 'Cause I've found a lot of ripple on the input (pin 1) and output (pin 2) of the 2 regulators near the MIDI...