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Small update Found a wiring issue, actually several. Smart money says that the humming is from a broken wire somewhere. Will continue to chase for VU meter housings or still complete VU meters as I only have a broken one. Will try to get in contact with someone who does 3D printing to create new hou...

Hallo Wolfgang, Ich habe auch ein Problem mit Spur zwei . Ich habe wie Sie alle Kondensatoren und einige Transistoren ersetzt. Mechanicly läuft es jetzt gut und Wiedergabe funktioniert ok. Aufnahme ist mein Problem. Wenn Sie irgendwelche gute Ideen was ich sollte schauen Sie in überprüfen Sie bitte ...

a tiny update. if anyone have any knowledge around this issue I can say that Im out of my league. I have traced the input signal as follows: ok orange circles are connections, green circles are replaced components. Incoming audio goes into pin 7 and 8, at the end of this channel you will find pin 13...

I still have a very bad 50Hz humming in the second channel. all transistors have been replaced on the first circuit board with the same issue. If I disconnect the negative cable on the filter circuitboard it gests a lot better but channel 2 is still extremely sensitive. I have cheated a bit about th...

new issue found today.

If I measure between the chassi and ground I have 220 V AC ( I got zapped )
this cannot be right..
the player plays fine but still have issues with Spur 2, but I think I have located the circuitboard with possibly faulty transistors.

cheers

if there is any interest I can post the entire component list ( so far ) and what I have replaced it with.

Ein bisschen Spaß Informationen .

Es gibt etwa 100 Kondensatoren und 32 Transistoren in der Braun TG 502-4 .

Es gibt noch weitere einstellbare Kondensatoren nicht gezählt ist.

Update: Alle Elektrolytkondensatorenhaben nun zusammen mit den Elektromotor Kondensatoren ersetzt. Mechanicly es läuft jetzt gut ist, ist es immer noch ein paar kleinere Probleme mit ihm aber. Der Bremseingriffwird manchmal 5 Sekunden oder mehr verzögert. Ich denke, das hängt mit Oxid auf der Relais...

Einige Bilder von meinem TG502/4 http://s30.postimg.org/uinnulejx/DSC00888.jpg http://s30.postimg.org/sznobvilp/DSC00889.jpg http://s30.postimg.org/ss4mt3x0t/DSC00894.jpg http://s30.postimg.org/54z2r92b1/DSC00895.jpg http://s30.postimg.org/789hyx23x/DSC00896.jpg http://s30.postimg.org/rael3t2wd/DSC0...

new capacitor fitted, worked nicely for about 15 minutes then it slowly dropped tape speed. I have purschased a service manual on ebay now and I´m about to make a list to replace all capacitors since I believe that this is the most probable cause of my issues with tape speed. if you know what may be...

Hello All, first post here, I hope that my poor skills of the German language can be overseen by actually owning a Braun TG502/4 :) ! This particular one was inherited from my father but unfortunately some less skilled radio guys have tried to "fix" it. These guys have manage to brake the ...