Advent 350 Power Rectifier Diode Replacement

[mteetank]

Hello,
I am replacing the power capacitors in my 1980's Advent 350 Receiver. The capacitors chosen require I increase the ampere rating on the power rectifier diodes. The OEM Diode part number is YAB-010EDI7945. I have not found any cross reference for this number so currently do not know the actual OEM Ampere rating of the rectifier diodes.

Question: What ampere and voltage specifications for the power rectifier diodes would be considered Robust (overkill) so I cover all my bases? Additionally, is there a resource that would be able to identify the specs of the OEM Diode. Thanks

 

[fpitas]

YAB010 PDF

Part #: YAB010. Description: 6 AMPERE AXIAL LEAD RECTIFIERS. File Size: 33.86 Kbytes. Manufacturer: Electronic devices inc..

pdf1.alldatasheet.com

?

 

[fpitas]

Were it me, I'd try to sneak a modern 35A bridge in there.

 

[fpitas]

If your new caps draw substantially more ripple current (from lower ESR? I assume), you *might* end up with some rectifier hash. In which case the cure is a snubber across each diode leg, 100 ohms in series with a 0.01uf ceramic cap being a typical snubber.

 

[mteetank]

I completed the install of the 12000uF Power Capacitors in my Advent 350. Fired it up and sounds great. I measured the 43 year old oem 6800 uF capacitors and they were between 5200 uF - 5800 uF. Now I am considering fpitas suggestion of adding a snubber across each diode. I am going to buy the Roxburgh EMC RE12001 x 4 for the diodes and use the same one on the power switch to reduce arcing. I have attached a diagram to show how I understand how to wire it. Any assistance in how to proceed would be appreciated.

 

[egellings]

I completed the install of the 12000uF Power Capacitors in my Advent 350. Fired it up and sounds great. I measured the 43 year old oem 6800 uF capacitors and they were between 5200 uF - 5800 uF. Now I am considering fpitas suggestion of adding a snubber across each diode. I am going to buy the Roxburgh EMC RE12001 x 4 for the diodes and use the same one on the power switch to reduce arcing. I have attached a diagram to show how I understand how to wire it. Any assistance in how to proceed would be appreciated.

Be careful that the peak currents from so much capacitance don't fry the power transformer.

 

[Doodski]

Be careful that the peak currents from so much capacitance don't fry the power transformer.

That and the bridge diodes are prone to damage with too much capacitance.