Zenith G725 Chasis 7G01

2/16/2009 11:21:09 AMRobert Steiner

Hi, What do I replace the selenium rectifier with? It's a 6 finned 1-1/4" red square with 2 wires and a diode. .....Thanks

2/16/2009 11:45:43 AMNorm Leal

Hi Robert

Most use 1N4004 through 1N4007 series silicon diode to replace a selenium rectifier. Only costs a few cents.

Add a resistor in series with the silicon diode since they have a lower voltage drop than selenium rectifiers. I normally use 47 ohms, might need a 1 watt rating on the resistor.

Banded end of the diode goes toward + marked side of the selenium rectifier.

Norm

:Hi, What do I replace the selenium rectifier with? It's a 6 finned 1-1/4" red square with 2 wires and a diode. .....Thanks

2/16/2009 12:37:47 PMRobert Steiner

Let's see if i got this straight. remove wires from old diode and selenium rectifier. connect wires to new diode banded end to old pos. then a 47ohm resistor across the two wires.

i Robert
:
: Most use 1N4004 through 1N4007 series silicon diode to replace a selenium rectifier. Only costs a few cents.
:
: Add a resistor in series with the silicon diode since they have a lower voltage drop than selenium rectifiers. I normally use 47 ohms, might need a 1 watt rating on the resistor.
:
: Banded end of the diode goes toward + marked side of the selenium rectifier.
:
:Norm
:
::Hi, What do I replace the selenium rectifier with? It's a 6 finned 1-1/4" red square with 2 wires and a diode. .....Thanks

2/16/2009 12:46:27 PMWarren

:Let's see if i got this straight. remove wires from old diode and selenium rectifier. connect wires to new diode banded end to old pos. then a 47ohm resistor across the two wires.

The resistor is in series with the diode, not across the two wires.

2/16/2009 12:39:46 PMWarren

:Hi, What do I replace the selenium rectifier with? It's a 6 finned 1-1/4" red square with 2 wires and a diode. .....Thanks

Should not have a diode if the selenium is still in use.
Are you sure it's not already bypassed with the diode ?

2/16/2009 1:26:05 PMRobert steiner

can i email a close up picture to you?

::Hi,
What do I replace the selenium rectifier with? It's a 6 finned 1-1/4" red square with 2 wires and a diode. .....Thanks
:
:
:Should not have a diode if the selenium is still in use.
:Are you sure it's not already bypassed with the diode ?

2/16/2009 1:57:10 PMWarren

Sure Can.

2/16/2009 2:29:30 PMRobert Steiner

Please email me where i can send the pic...thanks ...rob

:Sure Can.

2/16/2009 4:48:38 PMWarren

roadhog14@tns.net