Re: Motherboard wont post

Hi,

Just check that your 5v is still good, first thing post looks for. Maybe something blown or pulling it down. ie Short circuit.


Dave

Re: Yamaha RX-V2067 in Protection Mode

Hi Again,


Found another thread which discusses the PS2 PRT fault and it indicates the PS2 PRT monitors the +-5V.
[url]https://www.hometheatershack.com/threads/yamaha-rx-v667-ps2-fault.137426/[/url]
Further more he indicates that he has fixed the fault by replacing the 5v regulator. I will open it up and see is I can identify the 5v regulator on the power board.

Cheers

DaveRe: Yamaha RX-V2067 in Protection Mo...another thread

Hi All,

New member but have been following from the sidelines for a while. Been fixing some minor Power supply problems on Yamaha Receivers while we have been in lockdown to keep occupied. Got this RX V2067 a while ago and thought it would be an easy fix, but I have missed something and it has got me stumped on what else to look for.
On Power up the unit immediately turns off, the protection mode is kicking in I guess. I am able to disable protection mode at it take me into diagnostic mode and the only error I get is "PS2 PRT:162H" - From my understanding this...

Re: Yamaha RX-V581 going into protection mode

Hi
My first post,
Rails are a generic term used for locations for where you will find the main voltages that have been rectified from the Power supply. Ie most electronics use 5v on the circuit boards so will be easy to find.
There might be 12v and 3.3 volts as well. Check the pins on connectors leaving the power supply if needed. Voltages don't have to be exact but close is good, high\low voltages can give you the protection overload.
Hope that helps.

Cheers

Dave