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Old 3rd November 2013, 10:22 AM   #1
Ronito6 is offline Ronito6  Japan
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Default Reed relay replacement reccomendations

I need to replace the reed relay to a circa 1980 Sansui amplifier.

The part was made by Hitachi and is marked L24. It's part of the headphone circuit.
Hitachi reed relay.JPG

Other than the fact that it is obviously a 24v reed relay, I cannot find any info about it. (i.e. contact form, resistance)

Any replacement advice or information about this part anyone?

Many thanks in advance!

Ron

In addition, I bought this at a parts shop here in Osaka today. Could this one work for me? (I know its a shot in the dark ...but what the heck.)
New Fujistu reed relay.JPG
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Old 3rd November 2013, 02:52 PM   #2
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May be this helps: http://alltronics.com/mas_assets/acrobat/28B073.pdf
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Old 4th November 2013, 07:51 AM   #3
Ronito6 is offline Ronito6  Japan
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Awesome Mr Moose

Quite helpful!
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Old 5th November 2013, 01:03 AM   #4
Ronito6 is offline Ronito6  Japan
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Click the image to open in full size.

In the picture above (posted by Kale at Audio Karma), the old green Hitachi reed relay has been replaced by the yellow and blue component on the right.

A response by the great Echowars states that the yellow and blue competent is a US Relays Series 20.

Anything to add folks?
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Old 5th November 2013, 01:27 AM   #5
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I have seen and salvaged a bunch of those type of reed relays from old tape decks and 1980s VCRs from thrift stores. If you need one that may be a good place to start looking. Nice looking clean internals on that amp!!!
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Old 5th November 2013, 04:04 AM   #6
Ronito6 is offline Ronito6  Japan
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Default Scavenger hunt

Quote:
Originally Posted by adamhc75 View Post
I have seen and salvaged a bunch of those type of reed relays from old tape decks and 1980s VCRs from thrift stores. If you need one that may be a good place to start looking. Nice looking clean internals on that amp!!!
Now that actually sounds kind of fun. (Well...to me)

Any particular brands or models come to mind?
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Old 5th November 2013, 04:38 AM   #7
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I do remember one of the decks that I dismantled because of unobtainable parts was in fact a Sansui deck. I am currently tearing down an old Yamaha tape deck that the belts were turned to "sticky black gum..." and the mechanicals are pretty much worn out. As far as VCRs go a lot of the older Sony and JVC units have a lot of great parts in them. I use the motors in robotics because the have a pretty decent amount of torque and are very quiet compared to "toy motors" that you would find in a kids toy. Also the capstan motors a lot of the time have there own electronic speed controller built right on the motor so precise speeds when needed can be obtained without any additional costs. The disadvantage to this is that they are not reversible. but in there original intended function this is not a problem. Most of the time the parts value in thrift store finds are greater than the 5 to 10 dollars the item costs. But you also got to be selective as most newer items are built with surface mount and the cost of new surface mount parts are cheaper than the frustration of removing them from the board. The crazy thing is that I even found my big B&K components Reference 200.7 Mosfet power amp at a thrift store and all it had was a loose wiring harness that the ground pin was unplugged. Best of luck in your hunt!!
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