Cary Audio SLA-70B amplifier

Thanks for all your input and ideas. I'm sure they are all valuable. I have a few issues that may clarify some of my uncertainties. 1- I am 75 years "young" and cannot LIFT a 50 lb amplifier by myself; much less flip it over.  
2- Although I am a retired engineer, I have some difficulty following a pictorial or schematic when there are no values attached to them. It does  not help me to see a schematic drawing of the item in question if I do not have a voltage reading or description of the item in question.

3- Not having readings I cannot tell if the LED is burned out or damaged or shorted out or the voltage readings on either side of the resistors are good or not [regardless of resistor reading which seem OK].

4- Last but not least, I am retired living in Panama, Republic of Panama where the Panama Canal is and there are very few (I have not found one) "local TECH" that are EVEN WILLING to look at a wired amplifier. I am doubting that anyone under 40 years of age has EVER seen a point-to-point wiring.
As an example I asked: What size or voltage reading do I need to get the LED? Answer: Oh, don't worry about that. They're all the same. "Say What"?
So, what am I asking for? HELP. Help from someone knowledged enough to try to give me some decent advise.
My last question is: Is there a difference in the LED used? How do I check if it is shorted out?  The power fuse is blowing up so something is not going right.

If you have not already done so, maybe you could ask the folks at Sound "N" Music or GER Global Electronics Repairs there in Panama if they know of someone who can come to your place, like an old TV repair person use to do in the old days :)  Might be worth a try.  

Sound 'N' Music Electronics store in Panama City, Panama
Address: Av Central, Plaza Cinco de Mayo, Panama Phone: +507 212-1801

Hello decooney. Great info. Sorry to say that Sound & Music are a retailer of home sound equipment and have decent technicians that know how to INSTALL these equipments. They do very little repair.
They're recommending someone else, but the truth of the matter is that it is most difficult to find someone who knows about point-to-point wiring. Everyone knows about chips and circuit boards and mother boards.  I will keep on trying.

Hello imhififa. Your "link" takes me to a page that is not inexistence. Looks like it is from Italy? Don't know, but I could not get it open. Sorry my friend.

I was just thinking that Sound N Music may know of someone in your region maybe within a 4hr circumference. Some of these hidden techs work out of a basement of their homes, and shops contract and send out to them. It's not always openly shared or advertised. 

In any case, someone who understands basic wiring and point-to-point circuits will be most helpful. I'm friends with an ex-Cary Tech who sometimes does work, rarely, and that would require costly shipping too.  Worth it to keep looking around you for that less-known tech in your area. They do exist some times, adult easter egg hunt. Good Luck.