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The pfs stuff was great but you still need to know values and the math of electronic parts...I have a electronics hobby and pro audio past....when things break i would fix them or die trying.  I have a guy working with me that knows nothing about electronics but he is copying my instructions and doing a good job. Slowly he will know why a plus b is c......I have lost a lot of money learning on my own.....smoke had filled my shack many times.  I almost quit ........i have 1500-2000 in used equipment and still do not have a signal generator.  It is a lot cheaper to get someone to fix your amp for you  unless you get the tiger by the tail and get some equip and read  read read read....no one was lined up to help me....only a few good gentlemen.  For the most part I had to figure it out myself.  there is plenty of knowledge on the webb to learn if you have the time.  I am disabled and have the time to learn and have to continue to learn .....for me it was a life saver for a bored middle aged disabled man.   oh yea the pfs had pictures for their small amps with parts list and schematics.....good stuff.....I also bought lots of used amps and studied them.  I would start with really looking at a small dave made amp if you are looking for 11 meter knowledge.......the values are not there but you can get them......you can see how to lay it out......you also must be good with your hands ..drilling and taping and using a dremel tool and such.....we make lots of stuff to save money. 

good solder joints are a must also.


I am just a little fart compared to most here but this is just my two cents worth.......if  it means alot to you and you do not mind spending some cash,  and you have alot of time....you can do it.



galyn davis