Topic: ATTN 722 Users: Heat-Induced Auto-Shutdown?

[chris_jones]

Has anyone had a unit die on them mid-set?  I lost an absolutely magic set tonight because the thing just up and quit on me about 70 minutes in.  6000mAh battery that didn't drop below 7.6v.  Powered back on when I realized it shutdown, and began recording again no problem.

Postulating that it was heat (venue was not air conditioned in recent heat wave in NYC; had to have been 100+ degrees with no air circulation.  722 was out in the open, though, not in bag. 

Ideas, anyone?

Chris

[Ray76]

thanks for the report. I dont know if it is really the same thing, but I lost a firewire hard drive yesterday cuz of heat i believe. damn thing just shutdown yesterday while i was saving a show to it. was about 90 here yesterday.

ima get a cooling pad for mine.
+T for the trouble

[nickgregory]

so I posted this on the other list, but what split are you using?  I know Michael had very odd things happen using teh 4 Gb split.

Also, where was the unit, buried in a bag? out in the open, etc?

[scb]

chris, did you replace the hard drive yourself?  you might have put in a drive that doesn't like the heat

SD did a bunch of tests in extreme heat and they claim it shouldn't be an issue

[dmonterisi]

did you get an error message?
what firmware are you running?

[jimmyrow]

My 744T has gotten "cook a grillie" hot a number of times being buried in a bag at indoor (Asheville Panic) and outdoor (Richmond Big Summer Classic) shows and has never had a shutdown.   And the BSC was a 8+ hour marathon event.  The unit should be able to take some major heat punishment.

[nickgregory]

was it installed in a rack with other heat producing equipment?

[CQBert]

I had thermal issue at Cochella but not since..  Firmware is now 1.37 and seems fine although it does get hot..  Dino JR got real hot, Ween (Outside got hotter) but stayed with me.

I am not sure what the issue is... Thinking of doind a Compact Flash experiment and seeing it the heat generated over time is decreased.

Hoping for no issues at ACL this year. 

Only thing I can figure is - keep air moving around the unit.  When burried in a bag or on the ground with no air it seems to get hotter faster.

CQBert

[chris_jones]

Was running 1.42 firmware.

Might be the culprit.  Will revert to 1.37.

Unit didn't shutdown properly during crash, and I have a corrupt file.  Ran HD repair on restart, but file won't play on 722.  Anyone know how to try and more effectively repair an interleaved .wav?

[Diggin]

I had a somewhat fresh battery, 1.5 hours on it, and it wouldn't keep the unit on for longer than 10 seconds, still at 7.4 and wasn't flashing, swapped batteries and ran just fine after that.  Poped the "bad" one in after the set ot see if it was heat or not and it worked just fine for another hour or so then took 12+ hours to recharge.

gave a bad HD and had to repair.  repaired something but couldn't play it and wasn't any music since I never hit record.

firmware 1.37
in portabrace and sonic case in the sun on cement.

guessing the battery was hot or something

[scb]

Was running 1.42 firmware.

Might be the culprit. Will revert to 1.37.

Unit didn't shutdown properly during crash, and I have a corrupt file. Ran HD repair on restart, but file won't play on 722. Anyone know how to try and more effectively repair an interleaved .wav?

did you try transferring it to your computer and reading it in any audio app there?

[fozzy]

I'm pretty sure the batteries have themal circuitry for protection while charging which may the culprit for this shutdown.

[Brian]

mine may have done this as well but i thought it was because my battery died.  I had already put about 5 hours on it....mostly with using the pre's and not line in.  at this point i can't be for certain.  FWIW i didn't run mine in the portabrace at the time but in my bag.  I noticed that my 722 was hotter when not run in the portabrace? maybe the portabrace acts as heat sink of some sorts as well

[chris_jones]

I'm running stock HD, and a power2000 6000mah li-ion cell.  are these batteries reputable?

Battery never went below 7.6 volts.  began at 8.1v.  ran the same battery for nearly 4 hours a month ago with no problems.

I'm blaming heat 'cause it was literally an oven in the venue, but box truthfully box didn't feel that hot.

Random box shutdown makes me nervous.  I bought the thing for 'tape' backup and stealth, but I'm not happy if I need to sweat bullets wondering if the unit will last for an 80 minute set.

Chris

[Lil Kim Jong-Il]

Yeah, I traced my problems to the 4G splits.  I initially thought that there was a heat related issue but ruled that out after extended testing.  Also, when my unit had issues, it quit recording but it did not shut down completely.