TECH GURU's out there, how to clean Circuit Board?

No need to resort to patronizing language. Non conductive gunk on a PCB is almost certainly NOT a failure waiting to happen. If the gunk were likely to cause a failure it would probably have done so already. Using any cleaning agent risks doing more damage than the "gunk" that you're trying to remove. If you are willing to risk damaging components on the PCB to make it clean go right ahead and clean it. I would leave it alone.

Excessive dust and hair impedes airflow and is best removed to prevent any chance of overheating (though even this, I feel, is very unlikely).

Eldartford ... are you still sticking with your defination of

P R A T

as ... Pratical Range Against Target

Thank you very much guys, very helpful.
Just to clarify, I tried the micro vacum and compressed air and that did not work. There is hair and dirt still sticking, I bought this used, amp is around 6 years old so not ancient but used by some dirty bunch I believe.

I can get the grime off with slight damp cloth, and cleaned out what I could and let it there overnight and turned it on and used, perfect but I was trying to get the rest of the dirt off, I believe a small brush with the Chemtronis might work if done with care.

Well I rather leave it the way it is and use but its eating me, I am anal about my gear and I rather clean it up to make sure its well, thanks again guys

rapogee

Last question,

I believe I can spray this carefuly over the board where the grime is and clean gently? It wont harm the parts that are presently on correct?

This might be better maybe? Anyone? See link below

http://www.mgchemicals.com/products/4140.html

Thanks

Rapogee

Maybe better to use q-tips with cleaner, so that you don't have to spray directly onto the board, and risk stuff disolving and being carried to even less accessible areas. I have done this to clean excessive flux off parts I was repairing in the past.

This stuff would probably do it if not used too liberally.

http://www.radioshack.com/product/index.jsp?productId=2102649&cp=&kw=cleaner&parentPage=search