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Why Unqualified Repairs Are Often Dangerous

View attachment 5405553 This came into the shop today, customer first claimed that it was working fine then suddenly stopped working, and of course trying to claim the flat rate service program coverage said that nobody tried to repair it.

Obviously this wasn't the case and it came out that "maybe" he and his "highly qualified" electronics buddy from the local repair shop might have "looked at it" but didn't touch anything other than installing a new tube.

Clearly this wasn't the case, there's a metal rod where the fuse is supposed to be, the jack nuts are missing and the fan wires were cut. There was also "magic cure-all spray" spooge all over the inside of amp (including on the power amp module), which may have been the root cause of the failure.

First of all, this is extremely dangerous because depending on the failure mode, it's possible for the bulk supply caps to explode, which can launch electrolyte onto a person's face and into their eyes (a trip to the ER for sure).

Second, this would have likely been a $100 flat rate repair had they not messed with it. Now, it's in the $450-$500 territory.

This is a good way to learn from somebody else's expensive mistake (or lapse of good judgement), and why I stopped supporting non-factory service except at Fender authorized service centers. I see this stuff more and more these days.
People do the same sort of stuff to their sports cars also. "My friend just changed the plugs. Can you just adjust the carbs so it will run?".
 
I used to mix sound for live bands in a very popular sports bar in NJ on weekends... One of the PA power amps would frequently blow a fuse, so my boss (the owner of the sound system) told me to just substitute a folded-up sliver of foil wrap from the inside of a cigarette pack as a "replacement fuse" whenever this happened.
 
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this concept should be applied to so many other topics...

my dad recently retired after 40+ years working as an electrician in the NYC area...

he won't take residential side jobs anymore because too many times he gets to a job and finds the tell-tale signs of a "handyman" who did some electrical work. it's not that he can't fix it- or even that the customer can't afford to pay what it would cost to fix it..

its just the frustration of knowing how easy it should be, but some goof "knew what they were doing" years ago..
Friends of mine foolishly had a neighbor who "knew electrical work" do some work on a bathroom. A week later, the house, built in the early 1800s, an historic landmark, caught fire due to a short and was more or less destroyed.