Looking for AK Tech or advice - Yamaha M-70

[SilentHatch]

Don't bother.. 35vdc won't adjust.

Guess that answers my question - I'll have to try to get those ones out tomorrow. Anything you recommend from home depot, lowes, or best buy?
Stores near me are in zip code 04106. There's also a harbor freight near there if that has anything worth getting.

 

[avionic]

I cannot test them while they're in the board, correct?

Not reliably

 

[avionic]

Should I adjust that now or after I test those transistors?

I generally do adjustments after all repairs.

The right channel will probably adjust OK as previously stated by Athanasios.

 

[SilentHatch]

Not reliably

Great, thanks - appreciate the help so far
More to do in the morning, I'll check back in then and then look up where I can get some stuff to de-solder those and pull them out. Anything else I should get while I'm out?


here's my cart @avionic
I can't seem to post so I'm editing

• CHICAGO ELECTRIC WELDING
  Lead-Free Rosin Core Solder
  Qty:
  $3.99
• 
  SCHNEIDER
  Soldering Accessory Kit
  Qty:
  $19.99
• 
  SCHNEIDER
  Desoldering Kit
  Qty:
  $12.99
• 
  Jumbo Helping Hands With LED Lights
  Qty:
  $8.99
• 
  SCHNEIDER
  80 Watt Soldering Station

 

[avionic]

Anything else I should get while I'm out?

Something to practice de-soldering on... Some use solderwicking and some ,like me,use a desolder pump*



* like this

https://www.amazon.com/EDSYN-The-Original-Deluxe-SOLDAPULLT/dp/B006GOKVKI

 

[avionic]

Back in business..

 

[Asmodeus2112]

@Will_Emanuel is in Portland and does excellent work.

 

[avionic]

Looking like TR127 may have been holding the NPN outputs at rail.


2SC2705 --- KSC2383YTA
https://www.mouser.com/ProductDetail/onsemi-Fairchild/KSC2383YTA?qs=JV7lzlMm3yJNKQVlvFWlyg==