catch diode problem

[trevwhite]

Yeah I think the capacitors are my best bet right now. I am going to put some across the inputs on a batch of boards and observe an issues.

Thank you everyone for your input. You have really helped me keep my sanity with this issue.

Trev

[CJay]

Yeah I think the capacitors are my best bet right now. I am going to put some across the inputs on a batch of boards and observe an issues.

Thank you everyone for your input. You have really helped me keep my sanity with this issue.

Trev

Don't forget to come back and tell us what you find.

Good luck

[trevwhite]

Thanks, will do.

[trevwhite]

I went to see the batch of boards in production and found some very clear indications that some boards had been powered with the negative and positive the wrong way round. This was my initial conclusion but the client had told me wiring was definitely correct. Once on site this was definitely not the case so its pretty obvious to me that is what caused problems.

I have though decided to improve the circuit with some capacitors just to help things. 

Thanks again all.

Trev