Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Voltage regulator fault!

Status
Not open for further replies.
B

brunofunchas

Full Member level 3
Joined
Jul 1, 2009
Messages
168
Helped
10
Reputation
20
Reaction score
7
Trophy points
1,298
Location
Portugal
Activity points
2,348
Hi,

I have found on a board of an LCD Monitor a voltage regulator from 5V to 3,3V faulty. In the output I had near 5V, the same as the input!

This increase in the voltage damage the CPU, EEPROM, the rest of the IC's that should work on 3,3V rail?

Thanks,
Bruno
 

Hi Bruno, usually IC as CPU and EEPROM that works at fixed voltages are protected with internal circuit such as zener diodes. If you didn't keep for a long time (minutes) the 5V active maybe your IC are not damaged
 
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top