Crang
Well-Known Member
Hi All- just starting to go through a new to me Sansui 5500. Not the QRX or G, just plain jane 5500. It sounds great and loving it!
It has been cleaned out, pots and switches deoxit/lubed, offset/bias set, new heat compound on outputs, fuse bulbs replaced by leds, and case polished up. So now time to get into the real issues of which I have found four. One is all sorts of noise coming from the phono section, but I will save that for another thread another day. Another is a burned our power lamp and that I should be fine to fix. So the two for the topic of this thread:
1) There is static out the right channel on powering up and powering down. It does this on both AUX and FM inputs. Havent tried it on the others but assume its the same. It runs quiet other than the 3 seconds or so when hitting the power button, at which time ist about 3 seconds of crackling static from the right channel only. Ideas?
2) The FM tuner has issues. It pulls stations great at the low end of the dial- even hard ones. Great signal strength. Seems to pull in less near the top end of the dial but still gets the big ones. It does drift after about 45 minutes of warming up. The big issue is the FM Stereo light does not come on, and even strong signals are coming through in mono- no stereo separation. I put a meter up to the FM STEREO light when dialed into a strong station and there is no voltage, so doubt the light is burned out. Its just not getting juice. While I havent played with the AM much, it seemed fine when I tried to find stations.
I spoke with the local tech who did my last tuner allignment and he has a new policy. He will only do it on units that have been completely recapped- with the power supply and tuner section(s) recapped at a minimum. This 5500 is unmolested and there is quite a bit to it. While I plan to recap it eventually, its not on my short list of things to do. I would love to get the FM Stereo working without a full recap and allignment.
I read the excellent thread on cleaning the tuner. Problem is I don't have access to the VC. It has a cover on it. When I unscrewed the cover from the chassis, the entire VC is attached from the inside and would come out still inside the cover. Since it has the flywheel with the the string on it, I rather not take it out as it would likely mean removing the wheel and then a restring just to clean it. I have read some other posts on other units you can bump some of the VRs to try and adjust the stereo. And Idea how to do it on this one? Kind of in over my head with tuners. Also noticed one of the VRs on the schematic/spot on the board isnt there. Doesnt look like it was removed, just was never there. Just a single metal post coming up where it should be. Cant recall which, wil have to open it back up for the specifics....
Anyway, all ideas welcome. Thanks in advance for the help-
Chris
It has been cleaned out, pots and switches deoxit/lubed, offset/bias set, new heat compound on outputs, fuse bulbs replaced by leds, and case polished up. So now time to get into the real issues of which I have found four. One is all sorts of noise coming from the phono section, but I will save that for another thread another day. Another is a burned our power lamp and that I should be fine to fix. So the two for the topic of this thread:
1) There is static out the right channel on powering up and powering down. It does this on both AUX and FM inputs. Havent tried it on the others but assume its the same. It runs quiet other than the 3 seconds or so when hitting the power button, at which time ist about 3 seconds of crackling static from the right channel only. Ideas?
2) The FM tuner has issues. It pulls stations great at the low end of the dial- even hard ones. Great signal strength. Seems to pull in less near the top end of the dial but still gets the big ones. It does drift after about 45 minutes of warming up. The big issue is the FM Stereo light does not come on, and even strong signals are coming through in mono- no stereo separation. I put a meter up to the FM STEREO light when dialed into a strong station and there is no voltage, so doubt the light is burned out. Its just not getting juice. While I havent played with the AM much, it seemed fine when I tried to find stations.
I spoke with the local tech who did my last tuner allignment and he has a new policy. He will only do it on units that have been completely recapped- with the power supply and tuner section(s) recapped at a minimum. This 5500 is unmolested and there is quite a bit to it. While I plan to recap it eventually, its not on my short list of things to do. I would love to get the FM Stereo working without a full recap and allignment.
I read the excellent thread on cleaning the tuner. Problem is I don't have access to the VC. It has a cover on it. When I unscrewed the cover from the chassis, the entire VC is attached from the inside and would come out still inside the cover. Since it has the flywheel with the the string on it, I rather not take it out as it would likely mean removing the wheel and then a restring just to clean it. I have read some other posts on other units you can bump some of the VRs to try and adjust the stereo. And Idea how to do it on this one? Kind of in over my head with tuners. Also noticed one of the VRs on the schematic/spot on the board isnt there. Doesnt look like it was removed, just was never there. Just a single metal post coming up where it should be. Cant recall which, wil have to open it back up for the specifics....
Anyway, all ideas welcome. Thanks in advance for the help-
Chris
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