02-15-2016, 08:35 PM
It's been a year and a half since Mike rebuilt his Pioneer SX-1500TD. I've owned one for a little while longer than that, and used it regularly until it developed audio issues.
I've decided to completely rebuild the audio amp board with all new electrolytics.
This required pulling the board from the chassis...which is mounted in such a manner that the output transistors and heat sink are all mounted to the audio amp PC board.
[Image: http://www.philcoradio.com/images/phorum...TD_001.jpg]
This is a view of the audio amp board from underneath.
Removal required unsoldering and removing eleven wires, removing the metal cage on top covering the output transistors, removing two screws holding the whole thing in place, and pulling it out from the top.
I ordered the parts from Mouser tonight.
I've put this job off far too long. I'm looking forward to getting this one running again. I had previously replaced all of the dial lamps, and it looked good and worked well until it lost one audio channel. It's rated at 58 watts per channel into 8 ohms.
I've decided to completely rebuild the audio amp board with all new electrolytics.
This required pulling the board from the chassis...which is mounted in such a manner that the output transistors and heat sink are all mounted to the audio amp PC board.
[Image: http://www.philcoradio.com/images/phorum...TD_001.jpg]
This is a view of the audio amp board from underneath.
Removal required unsoldering and removing eleven wires, removing the metal cage on top covering the output transistors, removing two screws holding the whole thing in place, and pulling it out from the top.
I ordered the parts from Mouser tonight.
I've put this job off far too long. I'm looking forward to getting this one running again. I had previously replaced all of the dial lamps, and it looked good and worked well until it lost one audio channel. It's rated at 58 watts per channel into 8 ohms.
--
Ron Ramirez
Ferdinand IN
