ArcadeCollecting.com
Welcome, Guest. Please login or register.
June 18, 2019, 06:08:28 PM

Login with username, password and session length
Search:     Advanced search
Yay, a message board!
319 Posts in 114 Topics by 43 Members
Latest Member: deejaymc
* Home Help Search Login Register
+  ArcadeCollecting.com
|-+  General Category
| |-+  Repair logs
| | |-+  Toy Pop
« previous next »
Pages: [1] Print
Author Topic: Toy Pop  (Read 2197 times)
tim
Administrator
Full Member
*****
Posts: 166


View Profile
« on: November 20, 2005, 04:51:41 PM »

Symptom
Dead. Measured 0 resistance from vcc to ground.

Tests
Hooked up a 9volt battery to vcc and ground. Started measuring voltage at various places around the board to try to zero in on the short. Found the lowest voltage to be at a diode near the power connector.

Fix
Cut the diode. Short gone. Diode was shorted internally. This diode is most likely just there as protection against plugging the vcc and ground in backwards and not needed anyway as long as you don't plug vcc and ground in backwards.
Logged
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!