jabski
Vintage gear noob
I recently bought a Sansei 6060 at a local thrift store.
All the functions work, but there are light to very loud popping noises, whether at zero volume, or higher.
It does seem to diminish somewhat as it plays for a bit, but then ill get another loud pop every so often.
in another thread, it was suggested that "" this will be due to either one or more of the 2SA726 (differential input pair on the F-2647 board) or 2SC1313 (F-2646 board) small signal transistors going noisy. These are both known trouble makers in terms of noise (pops and hiss). I beleive that the standard replacements for these are the KSA992 and KSC1845. Note that the KSA992 pair would need to be gain matched, and the pin out checked against the original transistors (I beleive that they need to be installed 180 degrees with respect to the orientation of the originals )""
i have basic understanding of circuits, but have not done detailed work before, like what is suggested here.
The gain matched part is a bit puzzling to me at this point,along with the orientation..... I'll have to do some digging!!
The schematic,http://www.hifiengine.com/manual_library/sansui/6060.shtml will surely help.
Any tips on removing boards will be greatly appreciated, as i've never done this before.
I have a decent Hakko 888d soldering station, and solder suckers and wicks, but I would greatly appreciate any tips regarding this.
I have a local electronics store, where the owner is very patient with dumb questions,and he has darn near anything needed. Plus the guy is damn near standup comedian caliber!! I always leave there laughing.
Thanks for any help.
All the functions work, but there are light to very loud popping noises, whether at zero volume, or higher.
It does seem to diminish somewhat as it plays for a bit, but then ill get another loud pop every so often.
in another thread, it was suggested that "" this will be due to either one or more of the 2SA726 (differential input pair on the F-2647 board) or 2SC1313 (F-2646 board) small signal transistors going noisy. These are both known trouble makers in terms of noise (pops and hiss). I beleive that the standard replacements for these are the KSA992 and KSC1845. Note that the KSA992 pair would need to be gain matched, and the pin out checked against the original transistors (I beleive that they need to be installed 180 degrees with respect to the orientation of the originals )""
i have basic understanding of circuits, but have not done detailed work before, like what is suggested here.
The gain matched part is a bit puzzling to me at this point,along with the orientation..... I'll have to do some digging!!
The schematic,http://www.hifiengine.com/manual_library/sansui/6060.shtml will surely help.
Any tips on removing boards will be greatly appreciated, as i've never done this before.
I have a decent Hakko 888d soldering station, and solder suckers and wicks, but I would greatly appreciate any tips regarding this.
I have a local electronics store, where the owner is very patient with dumb questions,and he has darn near anything needed. Plus the guy is damn near standup comedian caliber!! I always leave there laughing.
Thanks for any help.