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   alt.electronics      Electronics design, repair, worship, etc      7,706 messages   

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   Message 6,349 of 7,706   
   Jasper to All   
   REQ: Schematic for Voltage Regulator for   
   16 Sep 09 12:52:58   
   
   From: mbkserver@gmail.com   
      
   Greetings,   
      
   I have a Honda CBR 600 F4 (1999) in which I have gone through two voltage   
   regulators now, due to their poorly designed heatsink (or lack thereof).   
   These babies cost $80-130 depending upon where one decides to buy them and   
   even then this is typically a "used" price.   
      
   After the second one fried (just recently), I decided to give a go at   
   reverse engineering the voltage regulator/rectifier, though with no avail --   
   as they have the circuitry conveniently (to them) packed in that annoying   
   anti-reverse engineering epoxy.  So, breaking this epoxy results in breaking   
   the circuitry of course, thus leaving me with shattered pieces of components   
   and epoxy.   
      
   Honda must know at this point (consider my particular motorcycles age and   
   given many others experience this known issue) their part is faulty, albeit,   
   it's obviously good profit margin for them to keep their customers having to   
   purchase many of these through their motorcycles lifetime.  I personally am   
   fed up with it and would love to obtain a schematic of a voltage regulator   
   replacement.  It is a 5 pin based rectifier, with a positive, negative and   
   three alternator fields.  I'm uncertain as to the AC voltage output of the   
   fields and the current/amperage requirement for the positive/negative   
   charging side.  Though I'm hopeful there may just be an electronics expert   
   on the NG's that may have made one for themselves.  I'm told the "superior"   
   Suzuki 5 wire rectifiers would work, however; I'd hate to invest in one   
   which will be once again, $80-130, only for IT to burn out just months later   
   as well.  I've checked my charging system and the fields did show an AC   
   voltage of what the manual calls for (I'm just not in a position at the   
   moment to look up those acceptable field voltages).  Resistance in the   
   charging lines are minimal/within tolerance.  And the battery has been   
   fresh/new with each rectifier replacement (to ensure no amperage overloading   
   due to a bad cell in the battery, etc.).   
      
   Any assistance is GREATLY appreciated.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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