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Old 23rd June 2020, 01:15 PM   #1
NSTR is offline NSTR
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Join Date: Dec 2012
Default Hertz HP1D

HI

I HAVE A POWER AMPLIFIER HERTZ HP1D AND I HAVE A PROBLEM WITH PCB
DWM3640 DRIVER LOW-HIGH FET
------------
THE LETTERS ARE RESPECTED BY THEM(IC DRIVERS U1 U2 U3 U4)
DOES HE KNOW THE DATA FROM THESE

THANKS
NSTR
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Old 23rd June 2020, 01:25 PM   #2
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
Location: Louisiana
U3 (TL072) and U4 (LM211) only very rarely fail. The large ICs are IRS21844S/IR21844S.
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Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
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Old 23rd June 2020, 01:58 PM   #3
NSTR is offline NSTR
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Join Date: Dec 2012
HI
THANKS FOR YOUR INTEREST
IS THERE A SCHEMATIC FOR DWM3640 DRIVER FET?
THANKS
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Old 23rd June 2020, 02:02 PM   #4
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
Location: Louisiana
Manufacturers almost never provide the diagrams for the output driver boards.

This may be similar:
3S-tech ZNCM_HP RE project
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.

Last edited by Perry Babin; 23rd June 2020 at 02:05 PM.
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Old 23rd June 2020, 02:12 PM   #5
NSTR is offline NSTR
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Join Date: Dec 2012
OK
THANKS
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