michael1978
- Mar 17, 2012
- 388
- Joined
- Mar 17, 2012
- Messages
- 388
Hello, i build the radio like they say in the book, and i did everything with VOM(testing with only multimeter),
everything was like in book , but when i finish, i switch to am or fm, i just hear high noise
I Measure, Test Point, without connection a speaker(because i thought the speaker was bad, so i desoldeer, and i connect with wire other speaker 8ohm but the same problem stays),
so
i switch to FM
tp15 and tp2=2.74V
tp15 and tp13=1.4V
tp15 and tp11=6.59V
tp15 and tp10=1.20V
tp15 and tp9=7.08V
tp15 and tp8=6.43V
tp15 and tp12=6.74V
i switch to am
tp15 and tp2=0.02V
tp15 and tp3=7.77V
tp15 and tp1=4.21V
tp15 and tp4=8.13V
tp15 and tp5=1.34V
tp15 and tp6= 8.7V
tp15 and tp14'=0.02V
TP15=GND
everything was like in book , but when i finish, i switch to am or fm, i just hear high noise
I Measure, Test Point, without connection a speaker(because i thought the speaker was bad, so i desoldeer, and i connect with wire other speaker 8ohm but the same problem stays),
so
i switch to FM
tp15 and tp2=2.74V
tp15 and tp13=1.4V
tp15 and tp11=6.59V
tp15 and tp10=1.20V
tp15 and tp9=7.08V
tp15 and tp8=6.43V
tp15 and tp12=6.74V
i switch to am
tp15 and tp2=0.02V
tp15 and tp3=7.77V
tp15 and tp1=4.21V
tp15 and tp4=8.13V
tp15 and tp5=1.34V
tp15 and tp6= 8.7V
tp15 and tp14'=0.02V
TP15=GND