diy tune up

[rodman101]

i have a few vintage receivers and amps and interested in rolling and playing with. all of them work with no issue. wanting to get the most out of them for what they are thinking about doing mild service, clean pots, switches, dc offset, and bias current but nothing more, barring a bulb if easy to replace. will use for ~4 weeks before swap. considering the age and all are fully analog and mostly discrete seems like a worth while project for me with changing season limiting to indoor projects. any comments welcome.

btw - i have found caig deoxit d5 the contact cleaner go to

 

[painttoad]

if they are working with no issues then leave them alone until they have an issue.

 

[rodman101]

Agreed but scratchy pots are annoying and don't allow proper adjustment. just saying while i'm there what else can be so easily tuned from a service manual and dvm?
this is what I have, nad has no light on right channel meter.
Kenwood KR-6050
yamaha cr-840
Pioneer SX-880
Sansui G-5000
kenwood ka-801
nad 3060

 

[quadmatrix82]

Check out the dc offset thread that’s a good start if you are comfortable working with a multimeter and electronics.

 

[painttoad]

Agreed but scratchy pots are annoying and don't allow proper adjustment.

you didn't say that, you said:

all of them work with no issue

you made it sound like you were doing it just to do it. i really don't recommend it.

but since you do have a reason, go for it.

since you only mention d5, you should probably start with reading this;

Thread 'TLDR Deoxit Guide'

Dec 28, 2018

Foreword
Since Caig Laboratories now have a lot of different products and The Idiot's Guide to Using DeOxit (revisited) is becoming a bit old, I decided to do a shortened version of it with spoilers for those who want more information. Also, I added a definitions part for word underlined and in italic so definitions are not mixed up with the procedure.

*** IMPORTANT ***
Please feel free to add any comments or suggestions to improve this guide.
I do not pretend to be the Deoxit master. Also, please point...​

• JayPare

• 

be careful, understand what you are doing before you do it. we have enuff "i tried to adjust my bias and my probe slipped and now my receiver doesn't work" threads.

buy mini grabbers and start with your least favorite unit.