Emu XL-7 & MP-7 User's Group

All right, i measured temperatures of the surface of the unit day and night after 1 hour of operation at 220 and 110V (i waited for the unit to cool down before taking the next measure), and this are the results:

220V ---> average Tº: 36º C (96.8 F)

110V ---> average Tº: 29.6º C (85.28 F)

The average environment Tº has been around 80-90 Fº these days.

In conclusion: even when the manual says that the XL-7 unit can be run at 220V, it is advisable to use a stepdown voltage converter in order to reduce heat and add to stability and extend it's working life. 

I haven't measured the Tº inside the case, but i suppose it could be even higher. Don't want to run the risk...

Jose

  ----- Original Message ----- 
  From: gonzinigonz 
  To: xl7@yahoogroups.com 
  Sent: Saturday, January 08, 2005 11:08 AM
  Subject: [xl7] Re: 220 vs. 110 volts



  Sounds like another switchmode PSU failing..
  This would explain your errors that you've been having. It doesnt 
  happen without power.
  Its one of the most common faults with any electronic / electrical 
  gadget, lack of correct supply voltages ie failed PSU's
  I have an BSS FDS366 Omnidrive here to repair. Guess what failed 
  swithmode! Sometimes it will start up and be fine. Other times you 
  have to repeatedly turn it on/off to get it to fire up.
  This fault is with the start up circuitry..
  Anyway id start looking for a replacement PSU for it, there has been 
  talk of this on the list..
  Im sure another type of switchmode could be fitted, voltage's / 
  size / shape permitting. I dont think these command stations are to 
  strange in the PSU department 
  I run my XL-7 via a 110v transformer now, the PSU gets far to hot for 
  my liking on 240v ;o)
  Regards
  Gonz




  #--- In xl7@yahoogroups.com, "groakes2000" <groakes@i...> wrote:
  > 
  > On another note, my continuing problem with Fatal Errors has been 
  > somewhat ameliorated by using a stepdown transformer running at 
  > 110v. Time between failures now stretches out to over 5 hours.... 
  > Which reinforces the thought that maybe my problem is related to a 
  > heat related failure of a component whose tolerances are 
  > rather "fine"....
  > 
  > cheers
  > Greg





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