Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Report Post  
Mark D. Zacharias
 
Posts: n/a
Default Counterfeit semiconductors again

A new low.

Harman Kardon HK-3370, original output transistors (never been previously
changed) were Chinese fakes. They didn't even bother to make the lettering,
logo, etc look the same or show the same hFe group. Busted them open, the
NPN's and PNP's even had different internals, die size was different, one
had RTV over the die, the other not. The numbers were 2SC3856 and 2SA1492.
I've dealt with many original Sanken devices - these weren't.

Good job as usual, Harman. Of course if Harman were a legitimate
manufacturer, instead of outsourcing everything for more than the past 25
years, things like this might not happen, eh?


Mark Z.


 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Counterfeit or "overstamped semis" Sidney Electronics Repair 9 April 18th 05 09:00 PM
Logos on Semiconductors kl1k Electronics Repair 7 January 9th 05 09:11 PM


All times are GMT +1. The time now is 06:45 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"