S300 Electrical Failure New Out of Box

[kevito]

Greetings,

I was doing a bunch of group installs for the local tuners in my city and found one of the S300s to fail immediately out of the box. It seems to have a problem with 5V drawing too much current from the ECU regulator. The S300 boots and can show live data and settings for 2-10 seconds, then it starts hard locking and rebooting as the ECU regulator resets from overcurrent/overtemp protection. It reads correct live data for the brief time it is working, as USB and datalog signals are good, but terminates with garbage data when it hard reset every few seconds (after the initial 10 seconds or so of warmup). Datalog is good again for a few seconds once it resets. I did not test the bluetooth module.

I have tried the S300 on four different ECUs, a mix of P06/P28/etc, and it does the same behavior with all of them. ECUs that do not have upgraded power rails only work for a few seconds, as opposed to ten or so seconds for those with extra power reserve. When the ECU cools down and is used again, it will last about 10 seconds before power cycling every 2-3 seconds. Trying other S300s from the same batch, in those same ECUs, has no issues at all and work flawless. It seems only one is bad.

Running the bad S300 in two different tabletop dummy engine boards causes the dummy engine board to also get very warm and extremely high current to pass into ECU main power lines (5A+).

The serial number is 65369.

I could possibly repair it locally as I have a full electronics shop, but I do not want to void the customer warranty. I believe there may be a failed passive component as the Xilinx and Ti main chips seem to be working, but I have no spent any time to actually diagnose the issue.

Please advise what the customer should do. I can get the dealer information from him as well as his contact and billing information, but I would prefer to send personal information through private message.

Cheers,
Kevin

[Spunkster]

The customer needs to contact us directly if they have this with the following at support<at>hondata.com

Name:
Address:
Phone:
Email:
Serial#:
Description of problem:

Include a link to this thread.

[kevito]

Sounds good, I will let him know ASAP.

Thanks for the reply.

Cheers,
Kevin