Introduction
If your Alan 48 Excel has poor reception or no reception at all, you should check the Q104 transistor receiver section and replace it if necessary.
-
-
First of all: Power off! Switch it off and unplug the device.
-
Then grab your screwdriver and undo the screws on the housing.
-
Carefully lift off the housing and put it to one side.
-
-
-
Time for some contact spray and brushes! Spray the connections thoroughly.
-
Wait a few minutes, then wipe away the residue with a clean cloth.
-
-
-
Find the transistor “Q104 (KTK 161)” on the circuit board. Here it is:
-
Take your multimeter and check the transistor. If it is defective, it must be replaced.
-
-
-
In order to replace the transistor, carefully desolder the connections. This is where you need to start:
-
Insert the new transistor and solder it in place.
-
Check the connections with the multimeter to make sure that everything is properly working.
-
-
-
Put the housing back on and tighten the screws.
-
Plug in the plug, switch on the device.
-
Test whether the reception is now better.
-
That's it! With these steps, your Alan 48 Excel should have top reception again. If not, a major repair may be necessary.
