Author Topic: Tuner: Sansui TU-666 front panel replacement globes, maybe LED  (Read 322 times)

Offline vinyljan

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I need to replace the 3 identical globes for the front panel.  Does anyone know if these are available locally and also if LED kits as available on the net is a better option :thinking:
In a maximum bank turn in a normal category airplane, like a typical Cessna, everything is fine until you turn across your own wake

Offline Family_Dog

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #1 on: August 27, 2017, 08:40:10 AM »
Great tuner! The globes are normal 6.3v 250mA. Mantech (and no doubt others - Communica, RS etc) should stock them. I replaced mine with 6.3v 300mA, they work fine, but 250mA if available is preferable.

The schematic and service manual is available on Hi-Fi Engine.


-F_D





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Offline vinyljan

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #2 on: August 27, 2017, 08:49:02 AM »
 :thumbs:, it is the one mentioned in the "Head's up" topic for R300; the LED's would have been R450 landed :facepalm:
In a maximum bank turn in a normal category airplane, like a typical Cessna, everything is fine until you turn across your own wake

Offline vinyljan

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #3 on: August 27, 2017, 08:51:32 AM »
Could the 6.3V in the design be a "leftover" from the valve era as this was probably early stage solid state :thinking:
In a maximum bank turn in a normal category airplane, like a typical Cessna, everything is fine until you turn across your own wake

Offline Family_Dog

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #4 on: August 27, 2017, 09:29:36 AM »
Don't use LEDs, they do not give the same warm friendly glow as the incandescent globes do. The tuner is designed for globes and looks fantatsic with the correct globes in.



This one was rescued from the dump.


-F_D



-Eric

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Offline HBAutomation

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #5 on: August 27, 2017, 10:00:52 AM »
Thank goodness someone here got it. A real beauty. :)

Offline vinyljan

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #6 on: August 29, 2017, 09:21:47 PM »
The globes are normal 6.3v 250mA. Mantech (and no doubt others - Communica, RS etc) should stock them. I replaced mine with 6.3v 300mA, they work fine, but 250mA if available is preferable.
-F_D


Can get 6V 500mA next door to my business at Electronics 123 till I find exactly what I'm looking for. Any risk as it will draw twice the current   :thinking:.   Stuck in some 12V 250mA just to see all is working and everything seems perfect.
In a maximum bank turn in a normal category airplane, like a typical Cessna, everything is fine until you turn across your own wake

Offline Family_Dog

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Re: Tuner: Sansui TU-666 front panel replacement globes, maybe LED
« Reply #7 on: August 30, 2017, 06:42:53 AM »
No, the current rating is too high. The transformer only supplies 1.5A as it is designed for 250mA globes. My tuner works fine with 300mA globes but you're exceeding the limits with 500m globes. You will also have a heating problem, the 3W heatsource could well distort surrounding plastic material.


-F_D



-Eric

That Guy in South Africa...
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*************************************