Yamaha newbie A-700 resto thread
- Thread starter analogwisdom
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- a-700 recap repair restoration
. Have ya noticed less xfmr hum per chance? Do ya add foam on top of the copper foil later?Thanks
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analogwisdom
When in doubt, stuff in a WIMA
In the home stretch now...
Got these boards finished and touched up every solder joint + defluxed the board! I really like how the tone control board looks now.
Got these boards finished and touched up every solder joint + defluxed the board! I really like how the tone control board looks now.
Last edited:
analogwisdom
When in doubt, stuff in a WIMA
Cleaning the glue from the two old caps on the preamp board was the worst part of it all, but thankfully the only thing it ate was the jumpers next to the caps. The legs from those new caps worked perfectly as new ones.
Ya got a lot done in a short time. Takes me a bit longer lol. Boards look great. Nice WIMA farm.
analogwisdom
When in doubt, stuff in a WIMA
Thanks! I really want to hear what this is gonna sound like so I'm more motivated than I normally would be.
Some of the new caps are KEMET, there's some values WIMA didn't have in stock. I think there's a Vishay I had to use on the main board too.
Seeing those old resistors next to the brand new parts on the board really is tempting me, but I gotta stop... Don't need to sink any more money into this lol
analogwisdom
When in doubt, stuff in a WIMA
I'll use the new one. I can't figure out how to bend the button back to the right spot, and other than the missing plastic pieces the new one looks a little better anyways.
analogwisdom
When in doubt, stuff in a WIMA
Managed to get new 5-way speaker binding posts installed on the stock plate! Glad to upgrade the god awful stock ones.
Nice! Looks very good.
The stock Yamaha posts from that era were at best odd.Cheers,
James
Impressive!!
You're gonna have 20 big boxes full of amps on your door step from people wanting your services. 
analogwisdom
When in doubt, stuff in a WIMA
Hahaha I wouldn't be opposed to that eventually but I've a long way to go.You're gonna have 20 big boxes full of amps on your door step from people wanting your services.
After you're done, would you help with populating this PCB? With Wima caps preferably...
analogwisdom
When in doubt, stuff in a WIMA
2.2uF and below on the small ones, should be perfect...After you're done, would you help with populating this PCB? With Wima caps preferably...
View attachment 3137672
analogwisdom
When in doubt, stuff in a WIMA
It's not together yet because I got obsessed with cleaning these today... So tedious. I hope the difference is obvious though, lol.
I'm almost scared to ask how do the insides look?
analogwisdom
When in doubt, stuff in a WIMA
It's been a long night, but looks like everything might be good!