Sony BRC-300 Repair Investigation.

3/25/2007 M. Antonucci

 

History:

Our camera developed serious issues and was sent out for repair. Multiple boards/ parts were replaced. Camera was repaired and is working normally now

 
Replaced items:
  • Camera Board

 

  • Motor Board
  • CCD (Mounted C. Boards). This assembly consists of the three CCD image sensors and three small amplifier boards that are soldered to the image sensors.
  • Note that the amplifier boards were de-soldered from the CCD chips.
  • Note the metal box the CCD (prism) is attached to. The box is only for protection during shipping.
  • Flex Cables (looks like two were replaced.) This seems rather odd that the cables would need to be replaced. A further inspection may be needed.
Investigation:
   
   
  • Two Fuses have been removed from the motor board. Looks like power (12V) comes in from the white connector to the left of the fuses.

 

 

  • I applied 12 V (current limited to 0.1 A) to the fuses after shorting out the removed fuses. No excessive current flowed.
  • The LEDs on the board lit.
  • I measured the voltages of the on board power supplies. All worked. (3.3V, 1.5 V, 5.0V)

Conclusion: The power board appears as though it may work. It's possible the fuse blew due to a failure on the camera board or the CCD boards. It may be difficult to power up the other boards. Will continue...

  • I measured what appears to be the output of a video chip (OKI).
  • From left to right:
    • National Semiconductor xxxx
    • Altera (FPGA)
    • xxxx (doe not look like it's in the video path.
    • OKI m7654 View Original Web Page (need Google to translate)
  • I didn't measure any shorts on what appears to be the output of the OKI chip. More investigation needed to determine if the was a path of damage!

 

 
Conclusion: (ongoing)
  • So far I don't see any power glitch damage!
  • Don't see any smoked parts.

 

 
   
   

 

 

 

 

 

Copyright © 2010 Exertronics.com
No Material from this web may be used without written permission from
Exertronics.
 
Exertronics does not make any warranties or representations with respect to the content, quality, accuracy or completeness of any information or materials contained on the Exertronics web server or through links to other servers, including but not limited to: text, graphics, applications, databases, services, or any other information or materials. Nor shall the Exertronics assume any legal liability for the content, quality, accuracy or completeness of said information and materials.

The information and materials contained on this web site have been compiled from a variety of sources and, as such, are subject to change without notice. In no event will Exertronics be liable for any damages, whether direct, indirect, general, consequential, incidental, exemplary or special, arising from the use of information provided on this server or through links to any other servers.

Communications to Exertronics via this web site shall in no way be deemed to constitute legal or official notice to Exertronics, its agencies, officers, employees, representatives or agents with respect to any existing, pending or future claim or cause of action against the Exertronics or any of its agencies, officers, employees, representatives or agents where notice is required by Federal, State or local law. Nor shall communications to Exertronics via this web site be deemed to constitute legal or official notice for any other purpose.

For comments, suggestions or corrections regarding the information contained on this web site please contact our webmaster