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Re: Sasui 9090DB dolby switch wanted

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Posted by Arsenio on November 06, 2004 at 08:08:52:

In Reply to: Re: Sasui 9090DB dolby switch wanted posted by Arsenio on November 06, 2004 at 06:57:17:

: : Sten,

: : Thank you for your advise! I'll try to do that, but the Dolby selector was disassembled twice now, and I thinkh the contacts are becoming loose, causing a hard time yo me cause i have one channel only... Do you think that's is still possible to find a Dolby selector to replace mine? I Also need a power switch to replace too!
: : I[m from Brazil and is very difficult here to find those vintage parts.

: : Thank you again

: : Maurício

: : : Hi Carlos
: : : Have you tried to clean the switch with a good De-Oxide spray ?

: :
: : :
: : : : I have an old Sansui 9090DB and its only problem is with dolby switch selector that causes one of the channels going off, and I have to get it back to mono mode to have the two channels on ...
: : : : I had tried to fix it many many times, but the eletrical contact problem always reappears. Could anybody have any idea what´s going on? Do I have to replace the DOLBY switch or it could be something else, tha cause that problem?

: : : : Thank you all

: :: Hi Carlos,
: There is two way to fix this problematic switch if you cannot find a replacement:

: 1. Open the switch clean the mettallic contact points (copper/bronze?) with "metal polish" use in buckles, with soft cotton or paper to clean the inserts, this will last for years and clip back the cover.
: 2. If not possible to clean, Solder and connect small wires to direct connection of stereo mode under the pcb, you will have no mono but your stereo contact will be forever.

: Regards, Arsenio
: PS/ if you decide to bypass the mono and permanently soldered to stereo mode wiring don't forget to cut mono connection leading to switch.

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