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I shorted out the display lights on a Pioneer SX 424 Help

Ric Harris

Ric Harris

Active Member
I was checking the bank of lights on my SX-424 and think or I'm almost certain I touched the power leads that hook to the fuse lamps to the chassis. DSC01753.JPG
All the lights went out. I replace a few bulbs but there's no power there anymore. DSC01754.JPG
I have a purple lead on one side and a white and black on the other.
Forgive me I am somewhat of a ignorant hack at times but I haven't the faintest idea which is hot and what I shorted all I know is there no power there now.
DSC01756.JPG DSC01759.JPG
I going to guess the purple lead goes to the power switch but the black and white wire ends here.
There's a soldered in fuse but I jumped it and got noting. I didn't think it would. I'm sure it's simple but I'm pretty simple too.
Any thoughts?
 
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Go to hifiengine & download the schematic/service manual for this unit.

Theres usually a dedicated transformer winding and output for the lightbulbs.

You will need to keep checking for voltages while working your way back to the trafo.
 
slimecity said:
Go to hifiengine & download the schematic/service manual for this unit.

Theres usually a dedicated transformer winding and output for the lightbulbs.

You will need to keep checking for voltages while working your way back to the trafo.
Click to expand...
In layman's terms a hot wire coming from the transformer that feeds the lights?
 
Ric Harris said:
In layman's terms a hot wire coming from the transformer that feeds the lights?
Click to expand...
Yes, generally two wires that provide dedicated AC voltage to the light circuit. I may be totally wrong on this - you need to download the data and confirm. Post a screenshot of the transformer section here if you need help interpreting it.
 
petehall347 said:
main fuse is 1 amp . it connects to the switched outlet and the power switch
Click to expand...
Yes I have a multi tester. Yes the unit plays music great. The stereo light is burnt out and I replaced it. I worked for a moment and then it stopped. My multi tester is pretty crappy. It has ohms and voltage but that's it. I bought a self ranging one but it grew legs and ran off. Likely with my son.
 
stereo light lighting and music says both fuses good .. set your meter on AC volts .
one probe to chassis . other to each side of that 3 amp fuse .
 
petehall347 said:
stereo light lighting and music says both fuses good .. set your meter on AC volts .
one probe to chassis . other to each side of that 3 amp fuse .
Click to expand...
I found power there. I think I may need to re-solder the wires. Finding 8v gives me some hope. I got and empty stomach and tired eyes so I may take a brake but I found 8v thank god for that,
 
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