I picked up two Leader LBO-32B Oscilloscopes at a estate sale. One powers up but the screen is blank, so it’s good for parts. The other powers up and I get the wave pattern but after about two minutes the wave intensity becomes lower and lower a then fades away.
I was hoping someone can give me some direction as to what to look for. I'm planning on pulling some parts from one to get the other to work.
So far I have:
• Sprayed fine tuner on all the controls
• Swapped the tubes from one unit to the other
• Sprayed circuit broad cleaner on the broads.
• Looked for any burned out resistors and capacitors
• Check voltages with were they were marked
Any help, schematic or manual would be appreciated.
I was hoping someone can give me some direction as to what to look for. I'm planning on pulling some parts from one to get the other to work.
So far I have:
• Sprayed fine tuner on all the controls
• Swapped the tubes from one unit to the other
• Sprayed circuit broad cleaner on the broads.
• Looked for any burned out resistors and capacitors
• Check voltages with were they were marked
Any help, schematic or manual would be appreciated.
