Data East power supply problem

[Steevsee]

I replaced the 68 volt zener, did another test & got 66.8volts  

Now just need to find a 110volt zener for D10  

Nice work.  Definitely worthy of happy dance.

Thanks to Andtan for the vital clue.

I'll check to see if I have that 110 zener.

[andtan]

+1 Nice work.

Looks like you almost there! And to think you had almost given up.

If Steevsee doesn't have the Zener, there are some at:

Element 14:
http://au.element14.com/nte-electronics/1n5379b/diode-zener-5w-110v/dp/2143709  - Only 74 cents each, but postage will be about $13  , or

From ebay where you can get 20 for $14 with free postage from China, in about 2 weeks  

http://www.ebay.com.au/itm/190918809986

They are listed as 1N5379B, but that seems to be the correct one.

I've had a look, but unfortunately I don't have any. If you were to grab the 20 from China I'd be happy to grab some from you and split the costs to make it more worthwhile.

Cheers,

Andy

[Dimsims]

Yeah thanks heaps andtan for the link to the checkpoint page   that page was the key  

I threw in a 1N4764 zener (100v) just so I could test the DMD and POW!! SHES WORKING !!  

Thanks heaps guys !! Couldn't have fixed it without you guys  

If you have one Steevsee, let me know how much and ill send you some $$

[Steevsee]

Great result!

I don't have that zener either unfortunately.

[Dimsims]

May have to go the ones from china 
At least ill have spares.

[Homepin]

Any combination of Zeners in series will do the trick just as well.

IE: 2 x 55V in series equals 110V