Don
Thanks for the advice. I will do a methodical unpowered investigation.
Arthur VE9BP
>
> From: Don Wilhelm <
[hidden email]>
> Date: 2007/07/06 Fri PM 03:28:46 EDT
> To: Arthur Gunn <
[hidden email]>
> CC:
[hidden email]
> Subject: Re: [Elecraft] K2 #6155 Resistance check for Assembly II - U6 pin
> 9 low value
>
> Arthur,
>
> The 8B line (Measured at U6 pin 8) is a voltage rail, so you should
> resolve the low resistance reading before you apply power.
>
> Be certain all the active devices are installed the right way around
> (the parts placement diagram at the end of the manual is handy for
> that), and check the value of any resistors connected to that voltage
> rail before proceeding.
>
> Sorry I can't simplify it any more than that - you will just have to
> hunt until you find it - voltage rail problems are like that. If you
> are brave and have lots of parts, you could just plug it in and see what
> overheats or smokes, but that is not in any way a recommended procedure,
> do it at your own peril.
>
> 73,
> Don W3FPR
>
> Arthur Gunn wrote:
> > Hi builders
> >
> > Progress seems fine except for a 36 ohm value measured at U6 pin 8
> > instead of >100 ohms (page 59). What values have you seen there? My
> > measurements were made with an Ideal auto-ranging DMM.
> >
> > I see at least 8 paths plus active devices to be considered for
> > troubleshooting if 36 ohms is not a commonly seen resistance reading.
> > The other values in the table of resistance checks are as specified.
> >
> > I look forward to hearing your experiences at this resistance
> > checkpoint.
>
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