881 works OK for perhaps 5 minutes. It seems that both AM/FM on tuner section is affected. AUX and phono inputs work fine and drives speakers. Below are voltages listed on 1507 board (Tuner board)
When powered up.....After 5 min when AM/FM dies
Point 14 = 1.1..........0.5 v.
Point 15 = 0.1..........1.9 v
Point 16 = 0.1..........0.8 v
Point 17 =12.7.........2.5 v
Point 18 =12,6.........2.5 v
Diode D02 was shorted blowing fuse F03. Replaced D02, same problem.
Sansui service manual states that I should have 12,6 volt on points 15, 16, 17. Somehow it was working fine without 12 volt for 5 minutes. If someone have experienced same scenario let me know which components you replaced, tks
When powered up.....After 5 min when AM/FM dies
Point 14 = 1.1..........0.5 v.
Point 15 = 0.1..........1.9 v
Point 16 = 0.1..........0.8 v
Point 17 =12.7.........2.5 v
Point 18 =12,6.........2.5 v
Diode D02 was shorted blowing fuse F03. Replaced D02, same problem.
Sansui service manual states that I should have 12,6 volt on points 15, 16, 17. Somehow it was working fine without 12 volt for 5 minutes. If someone have experienced same scenario let me know which components you replaced, tks
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