Problem with Beogram 4002 Type 5521

[Mark-sf]

Paul, we appear to have a language issue as I don’t understand what you mean by “plugging in the tray into a 20-Volt outlet”.  There are no IR diodes in this model as the end fixed arm light logo and the tonearm movement optical shutter all use incandescent bulbs.

I previously asked you to perform specific tests which you have not reported on and I need this info to assist further. If after plugging into the wall and pressing Start nothing happens, then you may have blown a fuse which is located in the back right hand corner in a black plastic box.

You have done things to the table that are totally unnecessary such as removing the control panel and its PC board and the result can be breaking something. It is also easy to misalign the board connectors and cause problems. How much experience do you have working on electronics and reading and understanding circuit diagrams?

[Paul Mac]

Hi Sr. When I refer to connecting the turntable, I mean 220 volts (mains). Secondly, the turntable does absolutely nothing and has no blown fuses. And the sensor light behind the transparent ruler is an IR LED, it’s categorical. I sent you a photo of that LED; it’s not incandescent, except for the optical shutter light for the arm movement. Regarding removing the control panel and its circuit board, I work with a grounded static discharge wristband, and I specialize in electronic repair of laptop computers. Audio isn’t my specialty, but there’s no one in Argentina who understands this brand of turntable. I repeat, the turntable does absolutely nothing when plugged into the mains. And there are no blown fuses. I’m attaching a photo of the IR LED. It’s not incandescent. I already tested it with 1.5 volts, and I can only see whether it lights up or not with an infrared lens. Finally, you insist there’s no infrared LED. I’ll prove it to you. I’ve already identified the circuit. Please see the circuit in the attached photo. Sincerely.

P.D.: My model, unlike yours, has an IR sensor, not a fluorescent one.
I’m attaching a photo of the IR LED. It’s not incandescent. I already tested it with 1.5 volts, and I can only see whether it lights up or not with an infrared lens. That said, please tell me how I proceed from here. Do you have a flowchart?”

• This reply was modified 2 hours, 37 minutes ago by Paul Mac.
• This reply was modified 2 hours, 4 minutes ago by Paul Mac.
• This reply was modified 18 minutes ago by Paul Mac.

Attachments:

You must be logged in to view attached files.

[Paul Mac]

Mark-sf wrote:

When you press start, the inward movement of the tonearm activates a switch on the slide PC board that causes it to remain on. If that is not happening you will get that problem. If you keep holding the Start button, does the arm advance to the middle as long as you hold it as it should?

          When I press the Start key absolutely nothing happens, whether I press it once and release it or if I keep it constantly pressed.

[Author]

Posts