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

Thanks Guys -

I borrowed a stepdown of my father-in-law. It has a dial on it 
whereby you can adjust the voltage down as low as 80v. Just for a 
test, I tried running the MP7 at 80v to see what would happen. It 
took a few seconds to power on, but other than that it appeared that 
everything ran normally.....

cheers
Greg


--- In xl7@yahoogroups.com, "Bob S." <tttsystems@e...> wrote:
> Great test and work Jose...thanks for the affirmation.....
> 
> Bob
> Corona/Riverside, CA
>   ----- Original Message ----- 
>   From: José Sáez 
>   To: xl7@yahoogroups.com 
>   Sent: Sunday, January 09, 2005 8:45 AM
>   Subject: Re: [xl7] Re: 220 vs. 110 volts
> 
> 
>   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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