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-   -   ma audio hk-4000 ,no sound to subs ?MA AUDIO HK-4000,NO OUTPUT TO SUBS (http://www.diyaudio.com/forums/class-d/184605-ma-audio-hk-4000-no-sound-subs-ma-audio-hk-4000-no-output-subs.html)

WRENCH030380 7th March 2011 04:29 PM

ma audio hk-4000 ,no sound to subs ?MA AUDIO HK-4000,NO OUTPUT TO SUBS
 
MA AUDIO HK-4000,NO OUTPUT TO SUBS
CHECKED
1- SUBS =GOOD
2-ALL FETS (MOSFETS) ARE IN THE MEGA OHMS
EXCEPT THE ONE ON THE LEFT SIDE OF THE BOARD THEY ARE IN 47.6 ? ALL ARE EQUAL THO ON LEFT SIDE, HAVE 4 FETS MSG33R AND MSG33S 2 OF EACH CHARGDED THEM AND THE SWITCH ON RIGHT SIDE OF BOARD =GOOD
3-GOT POWER=GOOD
4-PROTECT LIGHT NOT ON =GOOD
5-NO BURNT SPOTS ON BOARD AT ALL TO OR BOTTOM LEFT OR RIGHT = GOOD
6-NOTHING LOOSE=GOOD
7-NO IN LINE FUSES=GOOD
8-DISPLAY SHOWS 13.8 VOLTS 71 DEGS AND SOUND INPUT BARS MOVING ON DISPLAY=GOOD
:headbash::headbash::headbash::headbash::headbash: :headbash::headbash::headbash::headbash::headbash: :headbash::headbash::headbash::headbash::headbash: :headbash::headbash::headbash::headbash::headbash:
ANY INFO PLZ EMAIL ME AT SGTMAJWRENCH@YMAIL.COM

savu 7th March 2011 05:08 PM

2- that mosfet is fried

WRENCH030380 7th March 2011 11:38 PM

ma audio hk-4000
 
what mosfets are bad ? there is bout 45 of them, half read mega ohms 1075 and the other half read 47.6 and 4 of them are the msg33r and msg33s , are they all suppost to read in the mega ohms? ,does anyone have the schematics or diagram on what this amp mosfets are suppost to read on a meter?


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