Re: [MBZ] OT Circuit Board Repair

2015-07-01 Thread Rich Thomas via Mercedes
I was thinking about this today for some reason while driving. You might want 
to see if there is an avionics shop around that does repairs. They know about 
stuff like that. 

--R (sent from my miniPad)

On Jul 1, 2015, at 9:04 PM, Rick Knoble via Mercedes mercedes@okiebenz.com 
wrote:

Gerry wrote:

 If you can get the name, model, and serial number; I can send it to a friend 
 who deals in marine equipment automation. He might know of a source or a shop 
 that repairs them.
 Gerry

It is an Autohelm ST4000+

Here is a link to the manual, with schematic.

http://1drv.ms/1IugyHO

Thanks,

Rick

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Re: [MBZ] OT Circuit Board Repair

2015-07-01 Thread Rick Knoble via Mercedes
Gerry wrote:

 If you can get the name, model, and serial number; I can send it to a friend 
 who deals in marine equipment automation. He might know of a source or a shop 
 that repairs them.
 Gerry

It is an Autohelm ST4000+

Here is a link to the manual, with schematic.

http://1drv.ms/1IugyHO

Thanks,

Rick
  
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Re: [MBZ] OT Circuit Board Repair

2015-06-29 Thread archer75--- via Mercedes

Rick Knoble wrote:
 ‎Does anyone know of a place that trouble shoots and repairs circuit boards?
 Rick 
 ___
What is it out of? Does it have circuits on both sides of the board?
Have you looked to see if the ends of any of the capacitors are bulging?
Gerry

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Re: [MBZ] OT Circuit Board Repair

2015-06-29 Thread Rick Knoble via Mercedes
Gerry writes:
 
 
 Rick Knoble wrote:
  ‎Does anyone know of a place that trouble shoots and repairs circuit boards?
  Rick 
  ___
 What is it out of? 

GPS/Autopilot for a competition sailboat.

 Does it have circuits on both sides of the board?

Not mine, I don't know.

 Have you looked to see if the ends of any of the capacitors are bulging?

I did suggest that to the owner. I suggested he get a new or good used board
and re-cap the old one for a spare. A used board is upwards of $600.

Rick
  
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Re: [MBZ] OT Circuit Board Repair

2015-06-29 Thread archer75--- via Mercedes
 
  Rick Knoble wrote:
   ‎Does anyone know of a place that trouble shoots and repairs circuit 
   boards?
   Rick 
   ___
  What is it out of? 
 
 GPS/Autopilot for a competition sailboat.
 
  Does it have circuits on both sides of the board?
 
 Not mine, I don't know.
 
  Have you looked to see if the ends of any of the capacitors are bulging?
 
 I did suggest that to the owner. I suggested he get a new or good used board
 and re-cap the old one for a spare. A used board is upwards of $600.
 
 Rick
 
 ___
If you can get the name, model, and serial number; I can send it to a friend 
who deals in marine equipment automation. He might know of a source or a shop 
that repairs them.
Gerry

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Re: [MBZ] OT Circuit Board Repair

2015-06-29 Thread Dan Penoff via Mercedes
Something in that environment is probably conformally coated, meaning in order 
to desolder any components you have to burn through the conformal coating.

When you burn through the conformal coating, you usually need enough heat that 
it damages the board and causes the foil to delaminate. Not to mention the 
possible thermal damage to any components nearby.

Dan

Sent from my iPad

 On Jun 29, 2015, at 2:00 PM, Rick Knoble via Mercedes mercedes@okiebenz.com 
 wrote:
 
 Gerry writes:
 
 
 Rick Knoble wrote:
 ‎Does anyone know of a place that trouble shoots and repairs circuit boards?
 Rick
 ___
 What is it out of?
 
 GPS/Autopilot for a competition sailboat.
 
 Does it have circuits on both sides of the board?
 
 Not mine, I don't know.
 
 Have you looked to see if the ends of any of the capacitors are bulging?
 
 I did suggest that to the owner. I suggested he get a new or good used board
 and re-cap the old one for a spare. A used board is upwards of $600.
 
 Rick
 
 ___
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 To search list archives http://www.okiebenz.com/archive/
 
 To Unsubscribe or change delivery options go to:
 http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
 

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Re: [MBZ] OT Circuit Board Repair

2015-06-29 Thread archer75--- via Mercedes
Some time ago several on the list suggested solvents for removing the coating 
on the boards in the climate control units in 123s. However, don't remember who 
they were at the moment or which solvents they suggested. 
Surface mounted components that have leads of adequate length can be snipped 
close to the old component and the new components leads can then be soldered to 
the old lead without heating the board providing that there is enough room to 
use  pointed heat sink clips on the old leads next to the board. I use surgical 
misquito forceps if there is room because they are heavier and absorb more heat.
Gerry

Dan Penoff wrote:
 Something in that environment is probably conformally coated, meaning in 
 order to desolder any components you have to burn through the conformal 
 coating.
 
 When you burn through the conformal coating, you usually need enough heat 
 that it damages the board and causes the foil to delaminate. Not to mention 
 the possible thermal damage to any components nearby.
 
 Dan
 
 Sent from my iPad
 
  On Jun 29, 2015, at 2:00 PM, Rick Knoble via Mercedes 
  mercedes@okiebenz.com wrote:
  
  Gerry writes:
  
  
  Rick Knoble wrote:
  ‎Does anyone know of a place that trouble shoots and repairs circuit 
  boards?
  Rick
  ___
  What is it out of?
  
  GPS/Autopilot for a competition sailboat.
  
  Does it have circuits on both sides of the board?
  
  Not mine, I don't know.
  
  Have you looked to see if the ends of any of the capacitors are bulging?
  
  I did suggest that to the owner. I suggested he get a new or good used board
  and re-cap the old one for a spare. A used board is upwards of $600.
  
  Rick
  
  ___
  http://www.okiebenz.com
  
  To search list archives http://www.okiebenz.com/archive/
  
  To Unsubscribe or change delivery options go to:
  http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
  
 
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-- 
arche...@embarqmail.com arche...@embarqmail.com

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