Pioneer SX-990 Part 1: Receiver Tour & Case Refinishing

[@marka1986]

For whatever it's worth, I kept one of these going for a customer for years, acquired it after he passed. Some issues that I encountered were flaky bias pots. Failing output coupling caps. Also that unit has no output current limiting except the speaker fuses. So shorted wires can kill the outputs. Another thing, if you detach the output module make sure to get the ground wires back to same place even tho all go to the chassis. Strangely enough the main filter cap never failed and is still in place. Our distributor charged insane prices for higher value caps over 50 volts, so the old 1 stayed.

[@Lancaster_Hi-Fi]

Thanks for the pointers. It can be alarming when I turn it on. It sends out quite a thump.

[@phillipwaters7041]

Nice work, I am looking forward to you finishing this series.

[@TheAgeOfAnalog]

That looks wonderful. Good work!

[@Lancaster_Hi-Fi]

Thanks!

[@jheron61]

Hello I have a simple question on a sx1250 and looking for an expert opinion. I wondering if there’s a way I can reach you other then this forum. ? Thank you

[@Lancaster_Hi-Fi]

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