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Jeff Niceswanger · 03-02-2012, 09:12 AM

Hi Pat
I have stumbled on a Tech release Addendum quoting that the PN 7530T ( among others) will " shut Down unexpectantly" if a resister is not added to the "power on" line while using 16 volt battery's if the hand held PN 7550 Monitor is left hooked up..It states that if your unit has R1 or R2 stamped on the end panel,updates are already installed and this resister is not needed. Mine is stamped R4. I'm taking it that this is revision 4, and the other ones noted were revision 1 and 2...But wanted to verify. Thanks for you time and info, Jeff

03-02-2012, 09:12 AM	#39
Jeff Niceswanger Senior Member Join Date: Jul 2003 Posts: 894 Likes: 684 Liked 1,031 Times in 368 Posts	Re: Tech West Racing Services MSD Upgrade Hi Pat I have stumbled on a Tech release Addendum quoting that the PN 7530T ( among others) will " shut Down unexpectantly" if a resister is not added to the "power on" line while using 16 volt battery's if the hand held PN 7550 Monitor is left hooked up..It states that if your unit has R1 or R2 stamped on the end panel,updates are already installed and this resister is not needed. Mine is stamped R4. I'm taking it that this is revision 4, and the other ones noted were revision 1 and 2...But wanted to verify. Thanks for you time and info, Jeff __________________ Jeff Niceswanger 3740 SS