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Old 30th Mar 2017, 9:07 pm   #1
marsbar
Triode
 
Join Date: Apr 2011
Location: Stavanger, Norway .
Posts: 49
Default Finally, figured out my Bang Olufsen LX 2800

Was supposed to work outdoor today, but had to find indoor work instead.

I looked at my previous post regarding my Bang Olufsen LX 2800, and went trough all the tips again.

It simply appeared that R111 had to be adjusted

This decides whether the picture get stretched at the bottom and top, so this has to be tuned so letter in top, middle and bottom of teletext are the same size.

Made a map over what function all the pot meters nearby had, and adjusted the picture in. A test card would have been nice, but had to cope with normal picture and teletext.

I also replaced a 470uF capacitor in the audio part as the internal resistance was slightly high, and also in previous posts it was suggested to replace all red capacitors. Some hum in the background of the sound disappeared.

So this is what I did:

-Changed Zener diode 5.2V on PSU board
-Changed ALL electrolyte capacitors on main board
-Changed 470uF capacitor on sound amplifier board
-Cleaning on HV cable and transformer
-Changed mechanical on/off switch

TV is fed from decoder is set at:

RGB
YUV off
AUX Scart CVBS
Format 4:3
HD Activation OFF

Picture and sound is impressive

For the retro experience I also have a fully functioning C64 and Panasonic VHS

BTW, Think I posted this in the wrong section, can someone move it so "success stories"?

Thanks
marsbar is offline