Pioneer SX-1250 Receiver Repair And Restoration

Faceplate off. top and bottom covers off and ready to start this Pioneer SX-1250 repair and restoration.

Work on one assembly at a time and then check your work before continuing.

Try not to stress the wires to much. Like any wire, to much twisting and they will break.

Some new capacitors for the Pioneer SX-1250.

Clean the pins on the connectors while you have everything apart.

Many new capacitors and transistors were installed during this Pioneer SX-1250 restoration.

Good time to take a look at the solder joints. No problems here.

Usually enough slack in the wires to get any assembly where you need it to work on it easier.

Doing some bench testing on this Pioneer SX-1250 receiver. Just about ready to go.

Some transistors should be gain matched.

This device works well for matching the transistors.


I'll be replacing the large capacity filter capacitors during this Pioneer SX-1250 repair and restoration.

The original filter capacitors are rated at 22000uf at 80 volts. The replacements are 22000uf and rated at 100 volts.

This picture from the bottom on the chassis shows two of the original filter capacitors and their screw type connectors.

I've removed the screws and I will remove the capacitors from the top of the chassis.

The original capacitors are 40 years old and for reliable operation in the future it's time to replace them.

The replacement capacitors used during this Pioneer SX-1250 repair and restoration are the exact same size as the originals.

I'm ready to install the first pair of replacement filter capacitors into this Pioneer SX-1250 solid state receiver.

These Nippon Chemi-Con replacement capacitors are made in the USA. Not many electronic components are.

Two more filter capacitors to install. This Pioneer SX-1250 receiver will be ready for it's next 40 years of service!

The last of the connectors on the replacement capacitors are complete. It's time to power up this Pioneer SX-1250.

This Pioneer SX-1250 receiver powered up fine with the four new filter capacitors.

Tools of the trade. A good quality soldering iron and a good quality desoldering tool.

137 capacitors and transistors were replaced during this Pioneer SX-1250 receiver restoration.

Always use respected names for your replacement components. Just pennies more for the piece of mind.

This Pioneer SX-1250 receiver repair and restoration is complete. Hopefully there will be many trouble free years of musical enjoyment ahead.