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 Becker Pacific 740 car radio cassette from Mercedes
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 Return to top of page · Post #: 1 · Written at 7:36:37 PM on 9 January 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 496

Happy new year to all does anyone have a circuit diagram or manual for a Becker Pacific 740 car radio cassette.These were installed in Mercedes cars. I installed a modern radio in mine and would like to repair this as a project.
Regards Jimb


 
 Return to top of page · Post #: 2 · Written at 8:40:24 PM on 9 January 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4191

It is not unusual for the factory workshop manual to have that info. I have seen that data for Holdens and I have it for the original one for my MKII Zephyr. I have a "professionally" restored original radio for it with a docket for $300. Rip off merchants, don't know who paid for it , but it will take me around 3hrs + to fix it properly.

Marc


 
 Return to top of page · Post #: 3 · Written at 8:51:42 PM on 9 January 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5841

I may be able to source that. Will find out Monday.


 
 Return to top of page · Post #: 4 · Written at 9:24:38 PM on 9 January 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 496

Thanks Marcc and GTC.
I have a circuit for a much earlier model not this one.This one appears to be much later a lot of surface mounted components.
Regards Jimb


 
 Return to top of page · Post #: 5 · Written at 10:24:20 PM on 9 January 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4191

Love surface mount: PIB to service. What's it not doing other than "no code" go away.

Some of that stuff soldered / dipped with unleaded solder (harder) can have components break away, or crack the bond one end. "Tin Whiskers" can be another issue with & that type of solder and the board including IC's may need brushing down with a non static brush, to get rid of them.

Marc


 
 Return to top of page · Post #: 6 · Written at 11:15:47 AM on 10 January 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5841

.Jimb: a photo would be of assistance -- or let me know the year(s) and model(s) of Merc is was used in.


 
 Return to top of page · Post #: 7 · Written at 7:52:42 PM on 14 January 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5841

Well, no reply from you but my source advises that he does not have any data on that Becker model.


 
 Return to top of page · Post #: 8 · Written at 11:13:06 AM on 2 April 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 496

Sorry GTC. I was not trying to be rude. I do appreciate your help on many occasions.
Wife had two major operations and just got busy being chief cook and bottle washer.
She is doing reasonably OK now.
I lost interest in the project because it had been seriously picked at around the output IC's. I installed a modern unit in the Mercedes. It has a nice chrome front and does not look out of place in the 1974 Merc.
The Becker unit looked quite ugly and of course no blue tooth or usb.
Regards Jimb.


 
 Return to top of page · Post #: 9 · Written at 2:30:54 PM on 2 April 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5841

No problem Jimb. Sorry to hear about your wife's medical issues.

My source of such info repairs radios for vintage/prestige cars and a lot of them tend to have Becker radios in them as OEM equipment and the car owners want to keep the interior original. I don't find those radios attractive either, but they usually go for a lot of money on eBay, especially the models which have knobs that match the car's other dashboard knobs. He also installs Bluetooth if the customer wants it.


 
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