canuckaudiog
On a quest for high fidelity
Hey guys,
I recently acquired a Sansui 500a for the measly sum of $60.
Unfortunately I don't really know the history on it. But here is what I do know.
It appears to be all original, save for some tubes. I checked underneath and there was nothing obviously busted or overheated - all parts appear to be original and OK.
One 7189a tube is missing
I've put together a list of the capacitors needed, and I've been searching around AK and have read a few 500a restoration threads. They've been really helpful, except I am having trouble sourcing some parts.
For some of the capacitors, for example the 0.3uF/400V caps, I can't find any of the K40/K42 caps on eBay for sale with this value. The closest I can find is 0.33uF. Is it OK to substitute with this value or am I out of my tree? Another such value is 0.02uF.. these are tough to find and I'm not sure if I ever will.
Next question, based on my thread I started on the 250 I found, it seems the best advice is to get it all tubed up (so replace the missing 7189a), then run it on a DBT in series with a Variac. For the tube, what is my best option to replace it with? I don't want to have to do any modifications to make it work with another tube, I'd like to just slap one in if I can.. will the 6P14P russian tube work without any mods? Or am I stuck having to find another 7189a?
OK I think that's all for now. I nabbed the parts list from another thread so I believe I am OK there.. just want to be able to source all of the parts.
Thanks!
I recently acquired a Sansui 500a for the measly sum of $60.
Unfortunately I don't really know the history on it. But here is what I do know.
It appears to be all original, save for some tubes. I checked underneath and there was nothing obviously busted or overheated - all parts appear to be original and OK.
One 7189a tube is missing
I've put together a list of the capacitors needed, and I've been searching around AK and have read a few 500a restoration threads. They've been really helpful, except I am having trouble sourcing some parts.
For some of the capacitors, for example the 0.3uF/400V caps, I can't find any of the K40/K42 caps on eBay for sale with this value. The closest I can find is 0.33uF. Is it OK to substitute with this value or am I out of my tree? Another such value is 0.02uF.. these are tough to find and I'm not sure if I ever will.
Next question, based on my thread I started on the 250 I found, it seems the best advice is to get it all tubed up (so replace the missing 7189a), then run it on a DBT in series with a Variac. For the tube, what is my best option to replace it with? I don't want to have to do any modifications to make it work with another tube, I'd like to just slap one in if I can.. will the 6P14P russian tube work without any mods? Or am I stuck having to find another 7189a?
OK I think that's all for now. I nabbed the parts list from another thread so I believe I am OK there.. just want to be able to source all of the parts.
Thanks!