SABA FREIBURG FR18 SWITCH PROBLEM

I am about to try to repair two problems with my FR18. They are similar.

i) The Speech/Music button no longer operates; and

ii) The On/off button not longer operates.



I think that each button is connected to a relay and that I need to look at both relays first.

Before I start working on this, I would be very grateful for any advice!

(I will now try to translate this into German using Google, but the results may not be very good!!)



Very many thanks,



Bryan







Ich bin zu versuchen, zwei Probleme mit meinem FR18 reparieren. Sie sind ähnlich.

i) Die Sprache / Musik-Taste nicht mehr funktioniert, und

ii) Der Ein / Aus-Taste nicht mehr funktioniert.

Ich denke, dass jede Taste ist mit einem Relais verbunden und dass ich an beiden Relais zuerst schauen müssen.

Bevor ich auf diese zu starten, wäre ich sehr dankbar für jeden Hinweis!

Sehr vielen Dank,

Bryan

Thank you Dieter.

In fact the S/M switch failed about a month ago - before the ON/OFF switch! I was not too worried about it as the rest of the switches were OK. But then the ON/OFF switch failed.

I have the schematic from the RadioMuseum site and will have a look at it again before attempting the repair.

I was just wondering if any other FR18 owner had had the same problem?

Bryan

Ah Dieter, but most of you are in Germany!

So - when I get stuck with this, I shall ask you all for help!!

Bryan

Achim - very many thanks!

Yes - I guessed that the S/M and ON/OFF worked separately.

I will check both resistors and the mechanical condition of the ON/OFF switch as suggested. I won't be doing that for a few days as I have another (far less interesting!) project to complete first, but will keep the forum up to date with progress.

Meanwhile, I have registered with the download section of the forum - I am not sure where I would find the schematic for the FR18; is it under "Datenblaetter und Dokumente"??


Thanks again,

Bryan

Thanks!

Bryan

OK - I have found the ON/OFF problem!

The relay operated by the ON/OFF switch is sticking

I have taken some photographs, but I am afraid that I can't work out how to upload them!! I have gone to the upload link and successfully uploaded them, but not sure how I embed them in this text!

If somebody could advise me how to do that, I will do so!!

I really need to know if it is OK to apply some light machine oil to the sticking part of the relay mechanism please?

As always. many thanks!


Bryan

Here is the above in (dreadful!!) German:


Das Relais durch den ON / OFF-Schalter klemmt betrieben

Ich habe einige Fotos gemacht, aber ich fürchte, dass ich kann nicht arbeiten, wie sie zu laden! Ich habe auf den Upload-Link gegangen und erfolgreich hochgeladen sie, aber nicht sicher, wie ich sie einbinden in diesem Text!

Wenn mich jemand beraten könnte, wie das zu tun, werde ich tun!

Ich muss wirklich wissen, ob es OK ist, etwas Licht Maschinenöl in den Ankleben Teil des Relais-Mechanismus anwenden bitte?

Wie immer. vielen Dank!


Bryan

This may work!


http://saba-forum.dl2jas.com/bildupload/P1010343%20(Medium).JPG1/img

No - that didn't work - let's try this!!


http://saba-forum.dl2jas.com/bildupload/P1010343%20(Medium).JPG

Success - here are some more:

http://saba-forum.dl2jas.com/bildupload/P1010341%20(Medium).JPG

http://saba-forum.dl2jas.com/bildupload/P1010342%20(Medium).JPG

Thanks Achim - I have already soaked some paper in deoxidiser and used that to clean the faces of the contacts you have shown. I have done the same with the contacts behind both the ON/OFF and M/S switches as well.

I will now clean and lubricate all the other parts. I intend to get the ON/OFF switch working first before looking at the M/S problem!


Thanks again,


Bryan

The problem was indeed the relay which sits next to the mains transformer - it was sticking, so I removed it and cleaned it and lubricated it. All is well now!

Now - on to the speech/music switch problem. I have the scehmatic, and just need to work out the location of the M/S relay and assoaciated resistors. I guess that the numbers below it on the schematic (14 & 23) refer to corresponding tags on the actual chassis?


Bryan

Well this "piece of cake" has many capacitors in it!!!

What's the secret (in the absence of a component layout diagram) to tracking down C616??


Bryan