Schematic needed for a 25 year old radio

I have it. But before I send it to you let me know whats wrong with this unit and what you have checked on it already. I don`t like to give schematics out to people that don`t know how to use them. So the more you tell me that you know then the better it is for you.

What is wrong with the unit? I have a .pdf scan of the manual but it does not have a schematic. If you need the alignments or block diagram only it might be useful.

Leonard

Thanks Leonard, I inherited the Model HK 380i from our son and would like to restore it. He apparently had it worked on by someone who butchered it, but it seems to be a fine piece of equipment..

I know the 4 power transistors and shorted/open and have ordered the NTE replacements. A dual 0.33 ohm, 3 watt resistor is missing in one channel (but present in the other channel... that's how I knew the value) and a couple of driver transistors are missing. I have no clue as to what kind they are. I've checked with Harman/Kardon and they don't have service manuals this old.

Other than that, the FM/AM works up through the discriminator and operates the dial pointer, which indicates received signal strength.

The maunal would be helpful with the block diagram. I appreciate your offer and would like to see the manual.

Dan Street

snipped-for-privacy@nc.rr.com

Free download and you don't have to prove you know what you are doing.

Dan Street wrote:

Thanks for the download link, but no schematic.... and I know what I'm doing {:>)

I think Harmon Kardon pulled their schematics from their website one or two years ago. I'm sorry that I didn't download them all first, but it's rare for things to disappear from the Internet.

Boiler_81 wrote:

Yeah, really sad when they provided them at one time but for whatever reason, they decide to withhold significant information. But, I guess since it's their data, they can do with it as they wish. Still sad.

They still provide online access to manuals and schematics to dealers and authorized servicers. This particular manual is avaialable on their site, which is impressive since most companies don't bother to go back and scan 20 year old manuals. They must have missed the schematic, however, because it is not included. This may have been one of the models that had the schematic packaged with the unit, but it is not in the files for the OM nor the SM.

Leonard

around

H. W. Sams lists it as available as a photocopy. Their electronic index doesn't say if it was in one of the MHF series manuals as well.

Five days ago I sent you an explanation of what is wrong with the unit and what I had already checked, as well as what I suspect is wrong, my qualifications and my need for a schematic.

Since then, I have heard nothing from you.

What kind of game are you playing, tvguy?

Dan Street