• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Yamaha MX-1000 repair

I am looking to buy replacements for these transistors.
2SA1352
2SC3416
No one has the above-mentioned substitutes anymore. Big problem.
Could you please help me find which brands to buy from Mouser or DigiKey?
Thanks
 
Saule said:
I am looking to buy replacements for these transistors.
2SA1352
2SC3416
No one has the above-mentioned substitutes anymore. Big problem.
Could you please help me find which brands to buy from Mouser or DigiKey?
Thanks
Click to expand...
I checked my database and if available you can use:
KSA1381 -> 2SA1352
KSC3503 -> 2SC3416
but looks like it’s EOL.
hmm let me check the web. I will reply if I find something.
Best Regards
Alonia
 
You both are amazing. I am more attracted to KEC.
Am I right in thinking that KEC is a more reliable choice?
Thanks
 
Alonia said:
Maybe TTC/TTA004 from toshiba is a alternative -> depends on the voltage.
Click to expand...

Saule said:
Not suitable Toshiba slow, big Cob = ~ 20 pF
Sanyo fast smal Cob = ~1-3 pF
Click to expand...
Toshiba is not slow for what it does...it is actually excellent for what it does, but it is a different transistor suited for a different job . Targeting replacement of a 50-100mA transistor with a 1.2A Ic transistor, is like using a pickup truck to do the job of a sports car. Yes, they might both get you to the destination but the experience will be different.
@Saule, your call out is spot on. The OP should use the KEC option.
 
I installed Profusion KTA1381 and KTC3503 and leave long legs . To keep it from getting any warmer, I installed aluminum radiators. The temperature dropped about 10 degrees. Should not heat the motherboard and connection.
 

Attachments

  • IMG_1967.JPG
    IMG_1967.JPG
    146.6 KB · Views: 14
Hello all,
Does anyone have a quality image of main board 1 pattern side?
I have downloaded several service manuals but none have a quality image. I need to see where the jumpers go.
Several traces lifted for connections to sub1 and sub 2. I can go pin to pin but my images are all too dark to see.
My email sauliusp@gmail.com
Big Thanks
 

Attachments

  • CFEC52C3-7C8C-42D1-A187-8DDD4E794FF2.png
    CFEC52C3-7C8C-42D1-A187-8DDD4E794FF2.png
    376.9 KB · Views: 8
Saule said:
Hello all,
Does anyone have a quality image of main board 1 pattern side?
I have downloaded several service manuals but none have a quality image. I need to see where the jumpers go.
Several traces lifted for connections to sub1 and sub 2. I can go pin to pin but my images are all too dark to see.
My email sauliusp@gmail.com
Big Thanks
Click to expand...
Hey, a bit late but here a image from a original service manual.
https://imgur.com/a/TvAThAa
Best regards
Alonia
 
You must log in or register to reply here.
Back
Top Bottom