Is it possible to repair nakamichi cd pickup "home" laser?

[marko]

wow, thanks madmutt!! i look forward to having a play now, this could very well fix my unit as it stops half way through resetting when the stackers are resetting....

 

[MadMutt]

no probs.

Have a really good torch handy.
The alignment marks on those pillars are fkn hard to see.

Oh, and if you need to turn the posts, you can just 'lift' them a smidge to free them from the gear wheel teeth.

But I say again, WATCH THOSE F01 CAPS AND SPRINGS.

 

[niteowl]

I can do a scan of the alignment points of the service manual if you want it.

 

[niteowl]

never mind.I just looked at MadMutts picture. Should have did that first.

 

[marko]

no probs.

Have a really good torch handy.
The alignment marks on those pillars are fkn hard to see.

Oh, and if you need to turn the posts, you can just 'lift' them a smidge to free them from the gear wheel teeth.

But I say again, WATCH THOSE F01 CAPS AND SPRINGS.

well the stripdown/allignment/rebuild went very well without loosing the small parts.

still no joy with the unit though, still getting e/mecha but the intersting thing is when i press around the cn107 area it starts to reset itself then cuts out randomely.

so it looks like i need someone with micro soldering skills because mine arn't too clever with a 25watt soldering iron

 

[ukfan4sure!]

MadMutt;

I have a mb-VI I need repaired. it has the e-mecha error after a shipping situation.

Know of any techs interested in taking this on?

Thanks!

 

[MadMutt]

well the stripdown/allignment/rebuild went very well without loosing the small parts.

still no joy with the unit though, still getting e/mecha but the intersting thing is when i press around the cn107 area it starts to reset itself then cuts out randomely.

so it looks like i need someone with micro soldering skills because mine arn't too clever with a 25watt soldering iron

Don't wanna sound like a smart ar-e.
So I won't say anything

 

[MadMutt]

MadMutt;

I have a mb-VI I need repaired. it has the e-mecha error after a shipping situation.

Know of any techs interested in taking this on?

Thanks!

Not in the USA sorry.
Try anatech or nightowl from these forums.

But if you follow the above tips.
The mb-VI is the same mech...........

 

[marko]

Don't wanna sound like a smart ar-e.
So I won't say anything

a frind of mine has offered to do it as he has micro soldering abilities




i never doubted it wasn't this, i did run a soldering iron over the connections but deep down i knew it would need doing properly

 

[MadMutt]

Even though I have surface mount and reflow experience, first time I saw the connector I shuddered.

After the tenth I was, meh, nudda one.

Between the first and second I got the 0.3mm solder.
Made a world of difference.

Best of luck to ya...

Oh, the first one I did, I umm, damaged some tracks.
Ended up using a single strand of thin wire to remake the tracks.
Whole lot is glued down now.

Oh yes, some of the later boards had a drop of black or white 'glue' placed along the edge of the board to try and secure the connector better.
By the number of those I did I don't know how effective it was

 

[MadMutt]

and

 

[marko]

well i did a bit of soldering to day with my new "micro" soldering iron and now when i reset the unit it goes a bit further, below is a link to a video i took, still get the e-mecha error as soon as i press the source button though...

 

[niteowl]

Marko

Make sure the puck is in place. If that doesn't help then the whole mech needs to be realigned.

Martin

 

[marko]

how do i know if the puck is in place right? what is the puck?

 

[MadMutt]

Puck would be the cd clamp top.
Little round bit of metal.

I've counted three different versions.
Last version has an '0' stamped on it.

 

[MadMutt]

Found the pic of the 'glue' too.

Whats your email.
I have a 'present' for you

 

[marko]

markshutt (at) blueyonder.co.uk

something about that puck in your picture looks differant to mine, not what if anything but i have a hunch also, it's never possible to insert a cd because the 2 little tabs are always in the "locked" position...

thanks, mark.

 

[marko]

ok, it's looks like i'm rather puckered at this point, i don't have a puck on the top! the black plastic one below is there...damn

i've seen a complete for spares unit on ebay i might try and get, i won't be beaten!!

 

[ukfan4sure!]

Damn! That could be what is wrong with mine!
I heard this "rattling" around inside when I bought it (during shipping).

Inside i found the puck. I thought it went on TOP of the black plastic one. It seemed logical!

Now it looks like I will be tearing mine open again!

Thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Maybe, just maybe!!

 

[ukfan4sure!]

She's Fixed!!!!!!!!!!!!!!

I am so elated I can hardly stand it!!

MaddMutt, you ROCK!!

You posting the picture of the "puck" was the key! I had "replaced" into the wrong spot.

Of course, don't blame me, I had no diagrams and couldn't find anyone to even WORK on Nakamichi. I understand they suck for service.

Please email me, MaddMutt. I have something for you! ($$ hint).

You just saved me a boat load of frustration and you taking the time to post here was the key to my sucess!

Thank you!...