2. amps-preamps
  3. 188078-14915

EAR 834P - Sale or try and repair...

I have an EAR 834P and the volume is decreasing on the left channel. I opened the case and the tubes appear fine. However, there is some browning on the breadboard on one wire (coming from the toroidal power transformer), to the single phase bridge rectifier, and resistor (breadboard: P5, D3).

I have done some simple soldering (ex., DIY bottlehead amp) just not sure about diagnosis this issue.

  • Does anyone have any ideas on a possible repair?

Otherwise, I plan to post it on the forum for sale. Just hate to take a loss on the price if it is a simple part replacement.

 

abp689
bigkidz
3,383 posts
 

if you can do work yourself replace all power supply caps with Nichicon then add some V-Caps.  You will hear an immediate improvement.

Peter

 

 

 

theflattire
186 posts
 

@bigkidz 

Which Vcaps do you like?

Right now I'm using a mix of Miflex and Mundorf on my clone.

bigkidz
3,383 posts
 

@theflattire - Odam, the Milflex copper we liked but not as much as the V-Caps but Milflex also increased in price since we first used them so they are no longer the bargin they originally were.  Mundorf only in certain applications.  Nichicon Super through for power supply, Audio Note capacitors in key areas, Audio non-magnetic resisters and Amtrans resistors we mainly use.

Peter 

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