Help!! trouble shoot GWS-6N receiver

[archkk]

For all electronic experts in the thread,

I had this receiver for awhile. Rrecently, channel 4 for rudder control is not working at all, while other channels still function properly. Does any one know how to fix it? Any help is great appricated.

KC

[Bruce Abbott]

Most likely the 74VHC164 decoder IC is damaged. It's the 14 pin chip next to the servo connectors.

They are available from Mouser Electronics (http://www.mouser.com/index.cfm?&handler=data.listcategory&Ntt=FAIRCHILDSEMI+*74VHC164MTC*&Dk=1&terms=FAIRCHILDSEMI+74VHC164MTC&D=FAIRCHILDSEMI&N=0&crc=false).

[vintage1]

Or even more simply, something has gone wrong with the connector. Check for dry joints/broken tracks first...

[sinbad]

Sometimes a wire may have come off the control pot in the TX, as the wires move with stick movement. I have seen this quite often when radios come into my repair service with this problem. The other posts are also correct. As you can see there are a few possible places to check.
Sinbad

[archkk]

Thanks guys! It is very helpful. I'll check it out.
Kc