[Amps] Harbach metering board in SB-220

[Louis Parascondola]

That board is being phased out.

My board has 14 in a string.




-----Original Message-----
From: Pete Smith N4ZR <n4zr at contesting.com>
To: Louis Parascondola <gudguyham at aol.com>
Sent: Fri, Mar 7, 2014 4:42 pm
Subject: Re: [Amps] Harbach metering board in SB-220


          
    
My board has 14 in a string.
      
73, Pete N4ZR
Check out the Reverse Beacon Network at 
http://reversebeacon.net, 
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite 
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      On 3/7/2014 8:47 AM, Louis Parascondola wrote:
    
    
Those        resistors are almost never problematic.  I would more likely        suspect a poor solder connection or a swith problem.  BTW....The        new board has 3 resistors like the old style but the resistors        are good quality.  Makes assembly a lot easier.
        
        
        
-----Original          Message-----
          From: Pete Smith N4ZR <n4zr at contesting.com>
          To: Louis Parascondola <gudguyham at aol.com>
          Sent: Fri, Mar 7, 2014 8:31 am
          Subject: Re: [Amps] Harbach metering board in SB-220
          
          
            
              
Yes, it reads grid current.  I'm thinking                  that maybe we should assume the two problems *aren't*                  connected.  I vaguely recall someone saying that the voltage                    multiplier resistors on the Harbach board are                    under-rated and therefore prone to failure -                    assuming I dig in there and discover that one or                    more are open, what would be an appropriate                    replacement?  The value is a total of 14 meg.
                
73, Pete N4ZR
Check out the Reverse Beacon Network at 
http://reversebeacon.net, 
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite 
ARC V6 or VE7CC DX cluster node.

                On 3/7/2014 7:31 AM, Louis Parascondola wrote:
              
              
Does it read grid current?  Often times when                  the wires are disturbed like when wiring a new board,                  you could have a bad wire or connection.  Recheck the                  connections to the board on the yellow and orange                  wires.  Also make sure no wires came off the switch or                  the meter to the board.  They should have used                  strained wire.  broken wires often the problem.
                  
                  
                  
-----Original                    Message-----
                    From: Pete Smith N4ZR <n4zr at contesting.com>
                    To: Amps <Amps at contesting.com>
                    Sent: Fri, Mar 7, 2014 7:17 am
                    Subject: [Amps] Harbach metering board in SB-220
                    
                    
                      
I am trying to understand a minor problem in my SB-220, which otherwise 
works fine.  I originally installed the Harbach board because the HV was 
reading low.  It fixed that, but quite quickly thereafter the HV 
metering failed.  I *think* the relative power metering failed at the 
same time, but can't remember for certain - a common cause is puzzling 
because I can't see any commonality between the two circuits.

Can anyone help me identify components that are likely responsible?

-- 
73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

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