How do i know if my S300 V2 has gone bad?

[smithgrinds]

Good evening,
I been using my S300 V2 for some time now SN#22309, on my 97 Acura integra obd2a. I've had no issues until tonight where it stopped working. I'm getting a solid check engine light (i checked for codes) now. I'm using Hondata Smanager 2.5.2.0 I don't think that would make a difference in this situation. I think it's a hardware issue. I tried 3 other obd1 P28 ecu's with this S300 all with the same result. Solid check engine light engine runs like crap cause it's not able to read the map on the S300. I did notice that i used to have a solid green light in the 01 spot of the S300. Now i get no light at all, but i do have a green light at the D04 position of the S300.

Could it be that one of the solder points of the S300 has a crack not allowing the signal to come through?

Any help would be apprecaited. I would just like to know if the S300 is done and i need a new one, or if there is anything i can do to fix the S300

[Spunkster]

Is it detected at all when you plug in the USB with the key in the on position in the windows device manager?

[smithgrinds]

I didn't get a chance to try. I'll try tonight. Have you guys seen that before? No led lights at all? Well, one good thing. It's not a red led light.

[Spunkster]

IT could be any number of things, blown fuse, bad main relay, bad capacitors, bad ECU.