435 Princess deluxe issues

[prime]

The service manual doesnt have the power supply assembly, i have a copy from Norman for the 236 unit, it shows the rectifier but no info on what parts are used. I dont have a parts manual, im not sure if it will be in there. pete

[jukenorman]

Actually you do have the parts manual, but the power supply parts listing page is missing - that is of no consequence anyway because all it would have said is "power rectifier"! The (436) power supply diagram that I sent you gives you the info you require - two DC outlets with 1A and 1.6A fuses, so 3A (full wave) bridge rectifier required. If the new silicon rectifier were to fail, it's likely to fail short circuit so install an additional fuse between the transformer and rectifier to protect the transformer.

Norman.

[prime]

Hi Norman ive decided to use 5 watt diodes and i will add the 3 amp fuse in line with the transformer. I just wasnt certain the 436 was identical to the 435. thanks pete

[prime]

Hi Ron ,the fuse was in a Seeburg, i never smelled it because it was defective before i got the unit. I am now sure that is why i was sold the unit in the first place. pete

[Ron Rich]

Hi Pete,

I'd bet you are correct-- however-- when you get something "new" you really should open your eyes and check it all over, BEFORE, you power it up-- This includes all rectifiers-- usually they are good if the paint is not burned -- After a visual check, check for proper size/type fuses-- then power it up either on a Variac, or at least , a "dim bulb protector". Check voltages with a meter-- Ron Rich

P.S. This should read "a properly FUSED, Variac"-- I saw a brand new Variac, go up in smoke, as the gent did not add a fuse to it--

[prime]

Very good advice Ron, I have been doing it backwards, starting the unit to see what doent work. Will do alot more research before powering up in the future. Sadly i do have a dim watt bulb tester and a variac. Sometimes the obvious seems foreign. pete

[Ron Rich]

Pete,
You can make a dim bulb tester, in about 3 minutes, after acquiring the parts needed -- Search Dim Bulb Tester-- I found it with Duck,Duck-- I would add a fuse to any I built today ! Ron Rich