nackesww
Member
I've been enjoying my new hobby into electronics. It doesn't matter what new thing you try, its overwhelming until the pieces start coming together.
I was visiting my son and while he had the music playing in the background I couldn't help but notice the crackling noises coming from the speakers. I recapped the HPM 100 speakers he had and when I had them hooked up to my system at home they sound great. But when I hooked them up to his SX-850 they didn't sound as good. So after I heard the crackling noises I told him I would recap receiver.
After pouring countless hours on videos and posts I ordered all the parts and started recapping. Every time I would get done recapping a board i would turn it on to make sure it would work and to see if there were any improvements.
This is where I'm at right now after recapping and replacing transistors.
These are competed:
AWF-011
AWR-101
AWS-099
AWS-093
AWS-094
AWF-011
AWM-062
After replacing the transistors in AWM-062 It all seem to be working good until the next day when I was going to start on the power amplifier assembly. I went to turn it on and the lights came on but no click from the relay, and sure enough no sound.I did take out the transistors and put the old ones back in and it didn't help.
Like I said before I'm new at this so please bear with me. Looking at the schematics and testing the leads with my DIMM I would say I should move on and recap the power amp, but before I do I would like to run this by all of you first and hopefully get some expert advice.
Hear are the values I got from test:
AWM-062 protection circuit
1. .02
2.-13.30
3. 0
4. 0
5. .01
6. .03
7 .01
8. 0
9. 36.94
10. 36.94
11. 36.95
12. 7.9 AC
AWR-101 power supply
1.ground
2. 5.38
3. 5.28
4. 13.56
5. 13.58
6. 51.20
7. 51.22
8. 36.76
9. 37.77
10. 36.78
11. 28.13
12.ground
13. -13.32
14. 51.31
15. 18.41
16.ground
17. -46.6
18. -46.65
I am amazed at how many capacitors were out of tolerance. I only came across 1 cracked solder joint, after reading posts and watching videos I expected a lot more.
I was visiting my son and while he had the music playing in the background I couldn't help but notice the crackling noises coming from the speakers. I recapped the HPM 100 speakers he had and when I had them hooked up to my system at home they sound great. But when I hooked them up to his SX-850 they didn't sound as good. So after I heard the crackling noises I told him I would recap receiver.
After pouring countless hours on videos and posts I ordered all the parts and started recapping. Every time I would get done recapping a board i would turn it on to make sure it would work and to see if there were any improvements.
This is where I'm at right now after recapping and replacing transistors.
These are competed:
AWF-011
AWR-101
AWS-099
AWS-093
AWS-094
AWF-011
AWM-062
After replacing the transistors in AWM-062 It all seem to be working good until the next day when I was going to start on the power amplifier assembly. I went to turn it on and the lights came on but no click from the relay, and sure enough no sound.I did take out the transistors and put the old ones back in and it didn't help.
Like I said before I'm new at this so please bear with me. Looking at the schematics and testing the leads with my DIMM I would say I should move on and recap the power amp, but before I do I would like to run this by all of you first and hopefully get some expert advice.
Hear are the values I got from test:
AWM-062 protection circuit
1. .02
2.-13.30
3. 0
4. 0
5. .01
6. .03
7 .01
8. 0
9. 36.94
10. 36.94
11. 36.95
12. 7.9 AC
AWR-101 power supply
1.ground
2. 5.38
3. 5.28
4. 13.56
5. 13.58
6. 51.20
7. 51.22
8. 36.76
9. 37.77
10. 36.78
11. 28.13
12.ground
13. -13.32
14. 51.31
15. 18.41
16.ground
17. -46.6
18. -46.65
I am amazed at how many capacitors were out of tolerance. I only came across 1 cracked solder joint, after reading posts and watching videos I expected a lot more.
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