CurtPalme.com Home Theater Forum

Jeremy112 · Joined: 28 Sep 2006 Posts: 2649 Location: Fond du Lac, WI

I'd have to say they are mac, I'm getting better at reading schematics, that alone helps a lot. As for the firmware, I haven't gotten to it yet Embarassed

but I will Wink

Revert · Joined: 20 Dec 2013 Posts: 2 Location: Minneapolis

I have an issue with a VSX-51 Elite, Same board model. I don't have the schematics for it so this is a bit tougher, Can someone tell me the value of R493 and the PN for R690 (emitter Resistor) I have a bad Surround Back Right channel, a hand full of transistors and resistors are burned out, but the R493 also burned up in the middle of the board, which is a bit odd. Any help would be appreciated.

Thanks guys!

BTW, nice find on that leaky predriver transistor, That corresponding component is bad on my unit too.

EDIT: Was able to find a Service manual, the failed components seem to be very typical of a blown Channel. The one odd resistor and transistor failure I had was a -BHigh line monitor. So that makes sense too I'm going to replace the predrivers, outputs and biasing resistors in that Ch (SBR)

The problem is I hate buying form Pioneers parts dept, the costs are so high, and I'll have to order from multiple other places to get the mix of components I'll need.

Jeremy112 · Joined: 28 Sep 2006 Posts: 2649 Location: Fond du Lac, WI

I would try digikey or mouser, or partstore (partstore is bestbuys parts website, best buy sells that model, and they may also sell the parts to repair it since it is a common issue on these models).

As an interesting side note, these receivers are not made by pioneer. I am pretty sure these days anything that bears the beginning model number of "VSX" is made by a 3rd party company. Pioneer only makes receivers in the "SC" line-up. I know this because there are a few other brands (Denon, Marantz, etc...) that are literally identical on the insides of these units.

Hope you get the receiver going, whether or not pioneer makes it, its still a good sounding receiver with some decent features! Smile

Revert · Joined: 20 Dec 2013 Posts: 2 Location: Minneapolis

**Curt Palme** · Posted: Tue Dec 24, 2013 11:19 pm Post subject:

I order almost all my stuff on ebay. you just need to scroll down the seller's f/b rating for counterfeit parts complaints, ultra common in China.

Thanks for the heads up on Partstore, they are now memorized as someone who I'll NEVER order from.