The Workbench

Re: Repairing a Beolit 707

DrDimitris — Thu, 02 Jun 2011 04:07:02 GMT

It is not perfect but it is a workbench thread for sure.

Thanks again for your comments and remarks.

Re: Repairing a Beolit 707

Rich — Wed, 01 Jun 2011 21:18:28 GMT

Another steely-eyed missile man. Well done!

And great photos.

Re: Repairing a Beolit 707

Dillen — Wed, 01 Jun 2011 16:45:27 GMT

Nice work indeed !
And thanks for the photos. We like photos.

You may want to strengthen the board at the breaks with a
little 2-comp. epoxy or similar to avoid eventual shorts and/or more damage.

Martin

Re: Repairing a Beolit 707

tournedos — Mon, 30 May 2011 09:13:27 GMT

Thanks for posting, Dimitris

I have one in the exact same colour!

Re: Repairing a Beolit 707

DrDimitris — Mon, 30 May 2011 07:22:33 GMT

Finally all was fixed, the system was up and running again and i can enjoy it. It is a real classic radio! I love it. Hope this photo thread might be helpful to some.

Re: Repairing a Beolit 707

DrDimitris — Mon, 30 May 2011 07:11:47 GMT

The broken power circuit board needed some more work…..

Re: Repairing a Beolit 707

DrDimitris — Mon, 30 May 2011 07:08:05 GMT

Resoldering of the broken pc board solder:

Another plastic piece broken, another fix:

Re: Repairing a Beolit 707

DrDimitris — Mon, 30 May 2011 07:02:14 GMT

And here is a more panoramic view:

Re: Repairing a Beolit 707

DrDimitris — Mon, 30 May 2011 06:48:46 GMT

And here is the right side:

Re: Repairing a Beolit 707

DrDimitris — Sun, 29 May 2011 16:50:43 GMT

Thank you Dillen for your valuable input. First i glued with silicon glue the left end and secured with <<safety strip>> the right end of the ferrite core.

Re: Repairing a Beolit 707

Dillen — Sun, 29 May 2011 05:35:35 GMT

It is indeed possible for the power supply circuit board to break in transport.
It carries a fairly heavy transformer and has no decent support itself.
Sometimes the transformer is knocked lose from the board.
Check also the solder joints of the regulator transistor. That's the one with
the long metal cooling blade. Its solder joints being its only support.

The broken ferrite antenna holders is also very common, even the ferrite
rod itself can break. It will all glue fine back together.
The ferrite rod will work fine even if breaks are superglued in several places since
it works magnetically rather than electrically.

Some radios have small covers over windows at the bottom of the radio, like over the
serial number etc. Maybe that's where that colored plastic thingy comes from.

Martin

Re: Repairing a Beolit 707

DrDimitris — Sun, 29 May 2011 04:36:09 GMT

With the help of my father and a multimeter we tried to find out were the problems were located and we did locate several. Broken main pc board, broken ferrite core grips, broken solders and worst of all broken circuit board! The last one is inside a hard metal protective casing and to find it broken at that time made me furious because the seller had lied to me. There was no possibility for this to happen during the transfer. I was furious with the seller, reluctant for the result of my work, but i wanted to try. Soldering iron, patience, screwdrivers and of course the multimeter.

Here is the hard metal protective casing where the circuit board is housed.

Repairing a Beolit 707

DrDimitris — Sun, 29 May 2011 04:19:20 GMT

On the other day, i spotted a nice Beolit 707 on the auction site. I won and waited for the nice classic item to come to my hands. The seller stated that the radio was fully working. After some days it was there. Cosmetically as described (in a very very good condition i must say). Unfortunately when it came to my hands, the radio was not working and you could hear things broken inside. I decided to make a go and try to fix it. So i thought i make a small photostory for this on the workbench.

The first finding were the 2 plastic things and a small green metal plate 2,5cm X 1,5cm that were broken.