Sansui TU-717 question

pureh2o · 30th April 2008, 12:59 AM

Hi all. Can someone tell me if the dial lamps are in a type of circuit that when one burns out, it increases the voltage to the remaining three bulbs, and so forth. Thank you. John.

albireo13 · 20th March 2010, 11:37 AM

I have a TU-717 and the dial lamps are all wired in parallel, off of an 8V secondary winding of the transformer. Mine were burnt out so I just replaced them with white light LEDs.

Rob

Praudio · 20th March 2010, 03:57 PM

Quote:

Originally Posted by albireo13

I have a TU-717 and the dial lamps are all wired in parallel, off of an 8V secondary winding of the transformer. Mine were burnt out so I just replaced them with white light LEDs.

Rob

How you do it? with one diode it is around 6vdc ?

albireo13 · 20th March 2010, 09:58 PM

I used a white light LED from Radio Shack with 220ohm in series. The LED conducts during one half-cycle of the 60Hz voltage.
I did this for all 4 lamps.

Rob

30th April 2008, 12:59 AM	#1
pureh2o diyAudio Member Join Date: Apr 2008	Sansui TU-717 question Hi all. Can someone tell me if the dial lamps are in a type of circuit that when one burns out, it increases the voltage to the remaining three bulbs, and so forth. Thank you. John. __________________ Pureh2o

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
sansui R70	maxpou	Solid State	2	1st November 2009 10:21 PM
need help with sansui AU 220	qrius4ever	Solid State	2	18th July 2009 05:14 PM
Sansui xr q9	nik75	Digital Source	0	14th June 2009 10:12 PM
noob question about B-1000 sansui	ed2000145	Solid State	1	15th May 2009 10:46 PM
Sansui Xr-q7	sakis	Analog Line Level	0	4th March 2008 09:39 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

20th March 2010, 11:37 AM	#2
albireo13 diyAudio Member Join Date: Feb 2010	I have a TU-717 and the dial lamps are all wired in parallel, off of an 8V secondary winding of the transformer. Mine were burnt out so I just replaced them with white light LEDs. Rob

20th March 2010, 09:58 PM	#4
albireo13 diyAudio Member Join Date: Feb 2010	I used a white light LED from Radio Shack with 220ohm in series. The LED conducts during one half-cycle of the 60Hz voltage. I did this for all 4 lamps. Rob

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)