Hello to you!
I hope I am not bothering you in any way but I need your help:
I purchased an SX-626 (1971 MODEL) for 40$, it did not work but was incredibly clean. I figured I would recap it and also change transistors and power resistors.
I did all the work and still have a few problems:
1. The power supply (awr-006) gives me only 15vdc on the 30v output (pin 5) (the KSC945 I did solder incorrectly as EBC but was actually ECB). It did output 30vdc for a few minutes after I correctly connect the KSC945 but now only 15v. The diodes are all new as well. I get 57V, 12V and 24V on other outputs (pins 3, 7 and 10)
2. I have no sound in the left channel when I listen on the preamp output, and crackling in the right, no music but crackling. Except on input AUX , I can hear sound (very faint) on that input, the balance, volume, bass/treble all work, but only on the right. Both channel work when I press mono/stereo.
3. The 57V 2A fuse on (awh-002) left chanel blows when I power up the unit (with speakers connected), I did replace everything on the power amp board except the 1/4w resistors. The variable resistors were replaced by bourns units and set to very low resistance.
The tuner seems to work, fm stereo lights up when on a channel and the meters move accordingly.
I know it's probably something minor so if any of you could give me a hint, you would make me very happy.
I have only a DMM to work with so I am limited.
thanks in advance.
I hope I am not bothering you in any way but I need your help:
I purchased an SX-626 (1971 MODEL) for 40$, it did not work but was incredibly clean. I figured I would recap it and also change transistors and power resistors.
I did all the work and still have a few problems:
1. The power supply (awr-006) gives me only 15vdc on the 30v output (pin 5) (the KSC945 I did solder incorrectly as EBC but was actually ECB). It did output 30vdc for a few minutes after I correctly connect the KSC945 but now only 15v. The diodes are all new as well. I get 57V, 12V and 24V on other outputs (pins 3, 7 and 10)
2. I have no sound in the left channel when I listen on the preamp output, and crackling in the right, no music but crackling. Except on input AUX , I can hear sound (very faint) on that input, the balance, volume, bass/treble all work, but only on the right. Both channel work when I press mono/stereo.
3. The 57V 2A fuse on (awh-002) left chanel blows when I power up the unit (with speakers connected), I did replace everything on the power amp board except the 1/4w resistors. The variable resistors were replaced by bourns units and set to very low resistance.
The tuner seems to work, fm stereo lights up when on a channel and the meters move accordingly.
I know it's probably something minor so if any of you could give me a hint, you would make me very happy.
I have only a DMM to work with so I am limited.
thanks in advance.