Harman Kardon 330B - in the shop

[djfake]

Hi - I'm having a reputable dealer take a look at my Harmon Kardon 330B (Serial #52251A). After spending the past decade or so not being used, I plan on using it in our living room, with a pair of EPI 100s that I recently restored.

I'm having the shop check it out, clean dirty pots, check dc offset, replace faulty parts, etc, but is there anything parts-wise that I should pre-emptively replace?

thank you for advice,
Charles

 

[hopeless]

Any 1334 or 458 transistors

 

[painttoad]

Any 1334 or 458 transistors

c1384?

i've done 2 of these and on both, every single small value capacitor was leaking. not so bad that you could see it with the capacitors in place but when you removed them you would see.

the dc balance and bias trim pots should be replaced as well

 

[ivandezande]

Hi - I'm having a reputable dealer take a look at my Harmon Kardon 330B (Serial #52251A). After spending the past decade or so not being used, I plan on using it in our living room, with a pair of EPI 100s that I recently restored.

I'm having the shop check it out, clean dirty pots, check dc offset, replace faulty parts, etc, but is there anything parts-wise that I should pre-emptively replace?

thank you for advice,
Charles

A dealer?

All caps, all transistors.

 

[djfake]

A dealer?

All caps, all transistors.

An audio shop that specializes in vintage gear, been around for 30+ years

 

[ivandezande]

An audio shop that specializes in vintage gear, been around for 30+ years

Ha, I figured. Good!

 

[eiraved]

I'm having the shop check it out, clean dirty pots, check dc offset, replace faulty parts, etc, but is there anything parts-wise that I should pre-emptively replace?

Use the "Search" function using the word "330B". Next to the word "By:", type in "dlucy" which is the AK member's name. You'll find several threads with much good info on your receiver.

 

[djfake]

Use the "Search" function using the word "330B". Next to the word "By:", type in "dlucy" which is the AK member's name. You'll find several threads with much good info on your receiver.

Thank you. I have read his threads but was looking for more "succinct" advice.