Sony 7065 Receiver PS Help

[Champ]

Hi All,

I am rebuilding a Powers Supply for a Vintage Sony 7065 receiver . I have a few metal resistors on the board that are in need of replacement. Can anyone please give me a suggestion for a suitable replacement.
Sony has it as a 5W metal. Please see the attached image.

Lots of thanks
PS Schematic here http://www.hifiengine.com/library/sony/str-7065a.shtm

 

[jaymanaa]

Metal oxide is probably the way to go. http://www.mouser.com/Passive-Components/Resistors/Metal-Oxide-Resistors/_/N-7h8z0?P=1z0vij2Z1z0wui7

 

[Champ]

Metal oxide is probably the way to go. http://www.mouser.com/Passive-Components/Resistors/Metal-Oxide-Resistors/_/N-7h8z0?P=1z0vij2Z1z0wui7

jaymanaa thanks for the reply. Is it possible that the original resistor is what helps give the amp it's mojo? All things considering though, I will have to give up the originals as 2 of these suckers of the 4 are disintegrating.

Is .47 Kohms not 470 Ohms? 1000 Ohms being 1 Kohm. Think I got that right.

 

[Leestereo]

The picture is of a ceramic emitter resistor, one per output transistor. Its value is 0.47 ohm, the "K" follows the ohm symbol and indicates the tolerance of 10%; a "J" would have indicated a tolerance of 5%. You can use the metal oxide that jaymanna linked to, but note that those are axial; if you want radial ones like the original try either of these:

http://ca.mouser.com/ProductDetail/Ohmite/TWW5JR47E/?qs=sGAEpiMZZMtlubZbdhIBIKE51iOPHoshRS/XXZ1s/wE=

http://ca.mouser.com/ProductDetail/...GAEpiMZZMtlubZbdhIBIMxL4x8TffMYLc%2bIBxp5X2I=

 

[Champ]

I put the Oxides that jamanaa recommended and all is fine. I mounted them on end which was tight, but there was no room to lay them on the PCB. It works.

While I was at it I put all new lytics on the same board as well as replace the larger wire wound resistors. They are in an area that gets mighty hot. A problem (or perhaps this is normal) that has popped up with other owners of this unit. The original wire wounds were actually in spec which I found interesting considering the amount of heat they are subjected to, but put new ones in just for caution.

Next the main filtering caps. I have some Vishay's ready to go.

This is one beautiful sounding bit of vintage and the FM is excellent.