Addressing the regulated power supply and protection board, replete with peeing capacitors... ...oh, and hurting the amp. whoops. Well, it was next on the list.
Cool, back to the pioneer, yes those NC caps are horrendous in equipment of this age, ive seen cases where theyve leaked over two separate boards and destroyed the traces on both! leaked through one and got to the other and lifted about 7 traces. what i do on old amps like this to kill phone interferance is get some aluminium foil and put it in a laminator sheet, once laminated you have an excellet shield that is non conductive, you can make them different sizes too.
I wonder if the regulator board had a previous blowout that had been repaired? I know you said that section runs hot, but that's a pretty aggressive-looking black mark on the metal chassis. Ouch about the driver transistor, but at least it's easily remedied
Restoration job extremely well done. Thank you for sharing. Desoldering wick is expensive. Wouldn't it be more profitable to use a desoldering iron in addition? It would quickly pay for itself I guess ...
Strangely i never grew up around one. All the techs i learned from had their heyday in the 50s-70s. More common to have braid and a hot iron i guess . The wick is 25 bucks but it will last me almost two months. Just another part of the repair.
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Hi Jordan. Great video. I like your simple straightforward method. May I ask you what (brand) the plier is you are using at 17:50?
Cool video. Two questions please. What is the purpose of the capacitors in these circuits... what is their job ? Does modern electronics still use capacitors or has something better been invented ?
Capacitors block DC currents from circuits that want AC (music csn be thought of as AC). They can effect tone and performance as well. They make better capacitors today then they did 50 years ago
