Hello, and greetings as a new member to the group. I have an OLD weather radio from 1976 and I am trying to get it working again. I installed a fresh battery and I'm able to get a strong yet faint audio signal from the speaker. To clarify, the actual RF signal is fine but I can not amplify the audio portion of the circuit. I bought some contact cleaner today and sprayed a little on the rheostat and the crackling disappeared but the audio is still too low. I'm going to try and attach a photo of the circuit board in question. Thanks in advance!
PICT4644 on Flickr - Photo Sharing!
PICT4644 on Flickr - Photo Sharing!