• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Leader LBO-505 CRT?

Not open for further replies.


Well-Known Member
I have a LBO-506A and there the part number is 130BFB31


New Member
Mine says 130ARB1/B7 but it seems to be a "house" number. I picked up this scope for $5 US and have been trying to fix it. My HV is to low (only about -900vdc) Found a shorted HV osc transistor and an open resistor. I also changed some HV caps. It's looking like it might be the flyback transformer. Trying to find one of those at the moment.
Not open for further replies.

Latest threads

EE World Online Articles