12-28-2022 08:22 AM
Hello,
Was curious if anybody had this happen with their 430ex III or has fixed something of this nature.
12-28-2022 05:02 PM
Hello Cannonspdlite welocome to the forums and happy holidays. I've never had this happen to my 430EX III-RT. When my 430EX III-RT failed the IR AF Assist Beam was visible in my pictures. Which shouldn't happen at all and was fixed under warranty 3x times for this.
-Demetrius
Happy Holidays
EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM (Retired), EF 50 F/1.8 STM, EF 85mm F/1.8 USM & EF 70-200mm F/2.8L IS III USM
EOS 40D (Retired) & 5D Mark IV
430EX III-RT, 470EX-AI & 600EX II-RT
12-28-2022 07:35 PM
Thank you for the reply, yes this is a total failure of the PCB board and components. Curious if anybody replaced resistors or am I better off finding a donor board.
12-28-2022 07:54 PM - edited 12-28-2022 09:14 PM
I would just replace the board. Component level repairs usually aren't done anymore. Canon replaced the shoe first then the board. On the 2nd trip back to Canon they wanted to check the hot shoe on the camera body. Nothing was wrong with the camera body hot shoe. I use multiple Canon speedlites and none have caused this problem. Except the 430EX III-RT I don't know why this one though. After that the IR AF Assist Beam wasn't visible anymore in my pictures. When the AF Assist Beam was set to its default option pre-flashes "Intermittent Flash" the speedlite worked correctly.
-Demetrius
Happy Holidays
EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM (Retired), EF 50 F/1.8 STM, EF 85mm F/1.8 USM & EF 70-200mm F/2.8L IS III USM
EOS 40D (Retired) & 5D Mark IV
430EX III-RT, 470EX-AI & 600EX II-RT
12-29-2022 05:31 AM
Sorry, for your misfortune.
I would consider this device a total loss. It would cost more to repair than it replace it with a new. The components that are not showing obvious signs of damage underwent exposure to heat levels beyond their design specifications.
12-29-2022 03:20 PM
Thanks Waddizzle, it looks like it’s isolated to this board, don’t want to have $300 going down the drain, any donor boards that are available that can be tested with?
12-29-2022 06:40 PM
Board level repair isn't difficult IF you have a schematic and parts list because with those crispy critter circuit mount components you won't even be able to read the value AND before you replace any parts you need to figure out what failed that caused that component to overheat.
But unless you have service information OR you want to dig into reverse engineering what is being done in that section of the circuit, at minimum you need a donor board from a parts unit.
And be cautious because even these little hot shoe mount flashes store quite a bit of current in their energy storage caps.
Rodger
12/05/2024: New firmware updates are available.
EOS R5 Mark II - Version 1.0.2
09/26/2024: New firmware updates are available.
EOS R6 Mark II - Version 1.5.0
07/01/2024: New firmware updates are available.
04/16/2024: New firmware updates are available.
RF100-300mm F2.8 L IS USM - Version 1.0.6
RF400mm F2.8 L IS USM - Version 1.0.6
RF600mm F4 L IS USM - Version 1.0.6
RF800mm F5.6 L IS USM - Version 1.0.4
RF1200mm F8 L IS USM - Version 1.0.4
Canon U.S.A Inc. All Rights Reserved. Reproduction in whole or part without permission is prohibited.