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Products => Test Equipment => Topic started by: Bargainhunter on August 22, 2017, 10:40:40 pm

Title: Sencore PA-81 manuals
Post by: Bargainhunter on August 22, 2017, 10:40:40 pm
Need manuals (owner & service) for Sencore PA-81.

Thank you,
Chuck
Title: Re: Sencore PA-81 manuals
Post by: jh15 on August 28, 2017, 03:16:19 am
Someone here has them. I have only the owner's manual. Lost the service manual. Sure it is in a storage moving box.

Be willing to pay to have high quality scan of the color pcb layouts and stuff.

In meantime I am familiar with it, having bought it in 1990.

Do you have the 5 kw load?
Title: Re: Sencore PA-81 manuals
Post by: SES Audio on January 12, 2020, 02:58:25 pm
Adding the schematics to this thread for future use if anyone needs them.

Title: Re: Sencore PA-81 manuals
Post by: jh15 on January 17, 2020, 02:07:15 am
I always wanted to copy the custom proms (eproms?) to files or spare chips in case they fade or die.

Are you familiar with a programmer and chip numbers for this unit? I have some programmers, etc, but was hoping you might have done that.

Of all my audio related gear, this is something I want to keep. It came out after I built a rack doing the same stuff, but not digital. (1978).

I got my idea from custom test gear built at Yamaha. I had attended a 3 day Yamaha factory service training course.

The instructor said theirs was designed by an in-house tech.

I switched to a PA-81 as soon as I saw it. (along with Sound Technology distortion analyzer and FM stereo generator).