[TechAssist] Re: Any Car audio Techs?
- From: "Premium Technologies" <premtech@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 10 Jan 2002 20:51:43 -0800
You may want to check your cross-reference again. A P4M crosses to a NTE 121
in my book, and that is an AF power output..
Bill
Premium Technologies
Ocean Park, Washington
----- Original Message -----
From: Barddas the Bard
To: techassist@xxxxxxxxxxxxx
Sent: Thursday, January 10, 2002 5:38 PM
Subject: [TechAssist] Any Car audio Techs?
I have a Jensen KA 40440HLX mobile audio amp that a kid brought me, that he
had tried to work on himself. Want a Mess! I replaced all 8 mosfet switches
and the PWM chip and unit will still not come on. All Audio final output
transistors check good. I think problem might be QS1 a small to-92 case
transistor looking part with the markings P4M. P4M crosses to an ecg 129 but
the case style is all wrong anyone have a schematic for this amp and/or know
what that transistor is?
Carl Tierney
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