Philips Allegro 890A (Techniek Radio/TV)

door onbekend, 26.06.2011, 15:08 (4900 dagen geleden) @ onbekend

Hello, Hans! Thank you very much for answering my post on the Forum.

Yes, I know about the Dutch version with the E-roehren. The Service Manual I have indicates those tubes. The file my friend in Germany had, was a large file, too large for e-mail attachment, and I downloaded it from a site he mentioned:

www.getter.de/890A.pdf

Perhaps you could download it and help me translate the important parts of it?

So far, I have carefully removed the Dial Scale housing and cleaned it well. The dial glass cleaned up perfectly and now looks new. I just need to reassemble the housing and re-install it.

It appears that the chassis and the front panel with the Monoknopf assembly can be removed from the cabinet by removing the three metal retaining tabs on the insides of the cabinet front edge. Then, the four mounting screws on the cabinet bottom can be removed and the chassis may be slid out the cabinet from the back. However, there is not much slack in the cables for the cables for the dial-scale indicator, so the chassis cannot come out completely. But, enough, I believe, so the chassis may be cleaned of all the dust and dirt. There are even spider-webs inside the cabinet!

The Monoknopf button assembly is rather loose, so that the tuning control does not operate well. However, the band-switch and the knob movement for the tone control and (I think) bandwidth adjustment seem to operate well, mechanically. There is a whole page in the Service Manual which shows a perfect diagramme of the Monoknopf assembly with its parts. It is on Page O1 and O2.

I look forward to your assistance with my project.

With thanks,

Sandy