That's a way to go for cleaning the switches! No contact cleaners, deoxid or other crappy sprays. You have to open them and clean the contacts properly, just as shown on the video, Best Regards!
That's a beautiful piece of equipment despite its faults - such a shame we never saw them in the UK (by the mid '90s Sansui had repositioned themselves as a bargain basement player, sold by Richer Sounds and mostly rebadged Chinese and Korean stuff).
Unfortunately the Alpha amplifiers were only ever Japanese domestic I think so the entire world missed out on them… Japan kept all the good stuff for themselves
I always have aquire extra courage, before tackling this part of a amplifier restoration. Thanks for showing this tedious proces! One question though, why not using a small desoldering gun when removing the switches? This makes the job somewhat easier and faster. Cheers from the Netherlands,
It’s on my list believe me, you get so used to things over the years that you just keep doing it. Im planning on upgrading my soldering station with the desoldering gun addon, just haven’t worked up the courage to spend the $650AUD on it 🤣 I know there are cheaper ones but ive been spoiled by induction soldering irons that I can never go back
@@whatcouldgowrong7914 Aha, i understand. If 'm beeing honest, i have been doing it for many years like you in the past. At the shop where i worked, they had a Hakko 807 or 808. So i got spoiled. Can't remember exactly the modelnumber. This was mid 90's. When i started my small repairshop a couple of years later, a Hakko was on my shortlist, plus the famous Fluke 87 series. At one point both items where somewhat affordable on sale at my local distributor, and i didn't hesitate. I understand your wish to buy a decent one. Then you only buy once. Both the Fluke, and my Hakko 470 are still used to this day. But the Hakko did need some fair bit of attention in the past 20 years twice. Parts are getting harder to find for a older station now. Just stumbled accross your channel today, nice to see a collegue who works like i do. Thorough, and the way you should be doing things. There are some good repairchannels on yt, and always nice to find a new good one to follow. Cheers, Nico.
Nice job! Very good! I also need to change the relay on my Sansui alpha. In a local store, I found the Matsushita JC2aD-DC24V relay, identical to the original (It also does not have the current certifications printed). It's brand new, but from very old stock. Could this relay manufactured decades ago, although new, be degraded by time? Would it be better to opt for a current OMRON? Could you please help me with this issue?
Matsushita name doesn’t exist anymore (Panasonic now) so it must be pretty old. It may be fine still if its new but I would pop the cover and take a look at the contacts and see how they look visually. The Omron replacement has been fine for me and other than being made in China, performs perfectly 🙂👌
That doesnt mean it can not be opened and cleaned, i personally disassembly everything, sometimes its time consumming but its only one way to keep them working
That's a way to go for cleaning the switches! No contact cleaners, deoxid or other crappy sprays. You have to open them and clean the contacts properly, just as shown on the video,
Best Regards!
That's dedication man, well done!
Thanks! 😉
That's a beautiful piece of equipment despite its faults - such a shame we never saw them in the UK (by the mid '90s Sansui had repositioned themselves as a bargain basement player, sold by Richer Sounds and mostly rebadged Chinese and Korean stuff).
Unfortunately the Alpha amplifiers were only ever Japanese domestic I think so the entire world missed out on them… Japan kept all the good stuff for themselves
I always have aquire extra courage, before tackling this part of a amplifier restoration.
Thanks for showing this tedious proces! One question though, why not using a small desoldering gun when removing the switches? This makes the job somewhat easier and faster.
Cheers from the Netherlands,
It’s on my list believe me, you get so used to things over the years that you just keep doing it. Im planning on upgrading my soldering station with the desoldering gun addon, just haven’t worked up the courage to spend the $650AUD on it 🤣 I know there are cheaper ones but ive been spoiled by induction soldering irons that I can never go back
@@whatcouldgowrong7914
Aha, i understand. If 'm beeing honest, i have been doing it for many years like you in the past. At the shop where i worked, they had a Hakko 807 or 808. So i got spoiled. Can't remember exactly the modelnumber. This was mid 90's.
When i started my small repairshop a couple of years later, a Hakko was on my shortlist, plus the famous Fluke 87 series.
At one point both items where somewhat affordable on sale at my local distributor, and i didn't hesitate. I understand your wish to buy a decent one. Then you only buy once. Both the Fluke, and my Hakko 470 are still used to this day. But the Hakko did need some fair bit of attention in the past 20 years twice.
Parts are getting harder to find for a older station now.
Just stumbled accross your channel today, nice to see a collegue who works like i do.
Thorough, and the way you should be doing things. There are some good repairchannels on yt, and always nice to find a new good one to follow.
Cheers,
Nico.
Many thanks for joining the channel 🙏
Matsushita, the best.
Back in the day.... Age takes its toll on everything unfortunately...
I gotta ask, did you end up cleaning the mm/mc switch? Very courageous and patient work!
Yes I did, while I was in there, was the same as the front switches :)
@@whatcouldgowrong7914 Great, that satisfies my OCD tendencies.....
My OCD was satisfied also :)
Nice job! Very good! I also need to change the relay on my Sansui alpha. In a local store, I found the Matsushita JC2aD-DC24V relay, identical to the original (It also does not have the current certifications printed). It's brand new, but from very old stock. Could this relay manufactured decades ago, although new, be degraded by time? Would it be better to opt for a current OMRON? Could you please help me with this issue?
Matsushita name doesn’t exist anymore (Panasonic now) so it must be pretty old. It may be fine still if its new but I would pop the cover and take a look at the contacts and see how they look visually. The Omron replacement has been fine for me and other than being made in China, performs perfectly 🙂👌
@@whatcouldgowrong7914 Thanks. I thought the cover was sealed, I didn't know it was possible to remove it.
All these switch have never been designed to be open just to be replaced
Not replaceable anymore unfortunately 😞 unobtainable
@@whatcouldgowrong7914 I know
That doesnt mean it can not be opened and cleaned, i personally disassembly everything, sometimes its time consumming but its only one way to keep them working
Tak czy siak...w cholerę rozbierania 🙆