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crown xls 1000

xls 1000

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#1 stanley

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Posted 27 June 2014 - 04:39 PM

hi  all  ,,, friend  of  my   got  xls 1000 amp  from  usa (110v)  ,plug  it in   eu mains 230 v :blink:   and blow  smps any idea   where to start  checking and  where to get schematics thanks  all :D

#2 dakos

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Posted 28 June 2014 - 11:10 PM

OMG... Not even gonna ask why... I'm not sure but it seems to me once you open the amp, you'll know where to start. Are you also looking to convert the SMPS from 110V to 230V?

#3 stanley

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Posted 29 June 2014 - 02:51 PM

i  know   how   to  convert     :):)       but  schematic  will be  handy  to   find  out   what  is  gone

#4 stanley

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Posted 04 July 2014 - 05:33 PM

hi   can u tell me   what type  of transistors in  q901 q902 ,q904 q905  on xls 1000 amp ?    thank u very much

#5 joust

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Posted 07 July 2014 - 09:20 AM

Hey Stanley,

In the event of the smps having a catastrophic fault :

The iGBTs must be blown : The four Q9xx transistors are the current buffers for the gate drive of the iGBTs. If the transistors have become faulty and shorted, the modulator U902 may have to be replaced, at the same time. Note : If you still have a fault when you power up, you will destroy the iGBTs again. Beware!

Q902, 905 : 142033-1 XTOR, PNP 20V 2A NSS20200L SOT-23
Q901, 904 : 142034-1 XTOR, NPN 20V 2A NSS20201L SOT-23

Alain

#6 dakos

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Posted 07 July 2014 - 09:44 AM

May be power up using a variac to save those IGBT's...

#7 joust

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Posted 07 July 2014 - 01:41 PM

I can't really say how it would go; SMPS with variac is not 'recommended' or will not work reliably. A lot of these smps circuits have a low AC voltage protection (90-100VAC) detector that may prohibit the use of a variac. The way to go is to repair the smps circuit without the iGBTs installed, verify that the modulator (FAN7387 device) is actually modulating by scoping the 'gate' signal. If both phases appear coherent, then the IGBTs can be installed.
Note : The actual SMPS reference (V_BULKRET) is NOT ground. You will need to decouple the scope's ground from the AC ground or use an isolation transformer. To verify the modulator's gate signal, you will have to reference the device to the 'bottom' side of the device and its 'gate'.

Alain

#8 stanley

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Posted 07 July 2014 - 02:19 PM

yes igbts  are gone   and  fan7387 is dead 2   ,also resistor r913 blows        witch  is  10 ohm     but i have  no idea   what power  is  it     also   what  power  is  r951-r906 (82k) (i have no  schematics )    thank u very much

#9 dakos

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Posted 07 July 2014 - 02:22 PM

You can ask the tech support guys for the schematics, they are usually very cooperative.

#10 stanley

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Posted 07 July 2014 - 04:07 PM

i will  thank u   so much

#11 stanley

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Posted 08 July 2014 - 02:18 PM

what  is mean  SML and MED  model ? :huh:

#12 joust

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Posted 09 July 2014 - 10:34 AM

What's the context, Stanley?

#13 stanley

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Posted 09 July 2014 - 02:06 PM

this  amp  is   on  120 v    and was  pluged   in to  240v   thats why   shee blow  smps   so  there  i couple  resistors and jumper  to change  to be  work on 240v but  is  2 options    to  put   amp    in  to  sml and med   mode     so  i  have  no  idea  what  is  that  mean   :D

#14 joust

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Posted 10 July 2014 - 11:01 AM

I received an answer from Crown : Basically it means the product's designation :
SML : XLS1000; MED : XLS1500; etc.
There are two more designations : Large : XLS2000 and Extra Large : XLS2500

Hope this helps!

Alain

#15 stanley

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Posted 10 July 2014 - 02:56 PM

:blink:   oo       thank u      very much