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 Post subject: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke System
PostPosted: 21 Mar 2021, 03:21 
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Picked this up for very cheap - no manuals no info - much be rare - all in one Karaoke machine with Cassette, Laserdisc, CD - Circa 1992? Sanyo..

For the Record its a Sanyo LV-K77 Model
Im betting nobody has seen or heard of or knows of this machine ?!

Does the Laserdisc work..sadly no....disc loads and is recognised - Hear ticking squealing as if the laser is trying to focus/search but PLAY onscreen turns into STOP and it spits the Laserdisc back out...

Has a 'JET TURN' ..play both sides function.

Found a Owners but no Service Manual.

Only Sanyo player I could find some other info on is a LV-P500 ..

This unit is is literally a normal stand alone player put into unit..with a custom front plate and connectors.

Sound is good bass is very good..using with bluetooth input...cassette works well actually lol

my thoughts..its ugly...sounds good...but pity the Laserdisc is not working.!


Attachments:
LV-K77-REDUCED.jpg
LV-K77-REDUCED.jpg [ 499.34 KiB | Viewed 829 times ]


Last edited by d770 on 21 Mar 2021, 03:43, edited 1 time in total. _________________
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 03:40 
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Remote


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DRC-K77-REDUCED.jpg
DRC-K77-REDUCED.jpg [ 481.89 KiB | Viewed 827 times ]
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 04:16 
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d770 wrote:
Does the Laserdisc work..sadly no....disc loads and is recognised - Hear ticking squealing as if the laser is trying to focus/search but PLAY onscreen turns into STOP and it spits the Laserdisc back out...

Sounds like it could just need a new load belt.
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 04:35 
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takeshi666 wrote:
d770 wrote:
Does the Laserdisc work..sadly no....disc loads and is recognised - Hear ticking squealing as if the laser is trying to focus/search but PLAY onscreen turns into STOP and it spits the Laserdisc back out...

Sounds like it could just need a new load belt.


Yeah...Will try to disassemble have a look...its going to be challenge as it has an umbilical set of leads coming out of it to a main board to function.!

So far
It does recognise LD - LD light comes on
It sounds like its spinning up - then stops.

Interestingly it does NOT recognise CD's at all. hmmmm ?!
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 09:50 
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Video showing faulty unit in action after pressing Side B a couple of times -

Comments most welcome !

Seems to try - moves along the disc from center for a small distance then gives up...




https://youtu.be/Xf0tNShpXYo
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 10:14 
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It does spin up so maybe it's not a load belt issue after all.
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 11:45 
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takeshi666 wrote:
It does spin up so maybe it's not a load belt issue after all.


Yep - not looking good perhaps...

Shame - looks in perfect condition other than the fact it does not work 8-)
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 11:48 
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The laser optical block - does it look familiar to anyone? Wondering if Sanyo used a known brand for their player other than their own.


Attachments:
Laser-Optical-reduced.jpg
Laser-Optical-reduced.jpg [ 494.37 KiB | Viewed 802 times ]
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 15:59 
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Anyone like to hazard a guess as to what's happening here when I try and play a CD - see Video ! Note you need to listen with volume up.

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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 16:15 
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Tracking issue??? Or centering????
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 21 Mar 2021, 17:46 
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I can't tell if there is something wrong with the gears or servos.

Check for any missing teeth or other defects on the gears on the pickup itself.
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 00:57 
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The picture of the laser. Is that the flash reflecting on the lens or does it need to be cleaned?
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 04:25 
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krbahr wrote:
The picture of the laser. Is that the flash reflecting on the lens or does it need to be cleaned?


It does seem to be very cloudy looking but hard to really tell. I guess a cotton swap w/ a pinch of water is a good next step. ;)
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 13:45 
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rein-o wrote:
Tracking issue??? Or centering????


Yeah Im not sure - had another look today..tried a few more CD's ...it does not recognise that a CD is there at all...just more of the same behaviour as in the Video.

Few more Pictures of the Pickup to follow
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 13:47 
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cplusplus wrote:
I can't tell if there is something wrong with the gears or servos.

Check for any missing teeth or other defects on the gears on the pickup itself.


Removed the Pickup today and had a look..the unit is in really new looking condition...not much wear I can see on any gears..

Pictures of Pickup to follow...
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 13:48 
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krbahr wrote:
The picture of the laser. Is that the flash reflecting on the lens or does it need to be cleaned?


Yeah its clean - used just water and a cotton swab/bud...I think its reflection as the picture was taken with lights on.. will take another picture in daylight maybe tomorrow to compare.


Last edited by d770 on 22 Mar 2021, 14:18, edited 1 time in total. _________________
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 13:49 
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ldfan wrote:
krbahr wrote:
The picture of the laser. Is that the flash reflecting on the lens or does it need to be cleaned?


It does seem to be very cloudy looking but hard to really tell. I guess a cotton swap w/ a pinch of water is a good next step. ;)


Yeah it does kinda cloudy..not sure as I have nothing to compare it with...but I did take the pictures with lights on...the lens is clean and been cleaned with water on cotton bud/swab..but no better result unfortunately!

More pictures of removed pickup to follow.


Last edited by d770 on 22 Mar 2021, 13:57, edited 1 time in total. _________________
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 13:55 
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Here are a few Pictures of the Sanyo Laserdisc Optical Block Assembly - removed from machine

Imbetween the circuit board the model number of the Block can be seen cast in the aluminium frame it is:

SFL-90

....had a search and it is xtremely rare ! Unobtanium!

Still unsure sure why the unit cannot identify a CD but can an LD... unit looks in almost new condition other than it does not work!

As said I think these are very rare - more likely some still in use in Japan however.. my chances of coming across another ..pretty slim.

Found a parts list and Owners Manual..but no Service Manual.


Attachments:
SFL90 TOP.jpg
SFL90 TOP.jpg [ 494.92 KiB | Viewed 741 times ]
CORNER.jpg
CORNER.jpg [ 497.37 KiB | Viewed 741 times ]
UNDER SFL90.jpg
UNDER SFL90.jpg [ 488.95 KiB | Viewed 741 times ]
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 22 Mar 2021, 19:37 
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d770 wrote:

Still unsure sure why the unit cannot identify a CD but can an LD... unit looks in almost new condition other than it does not work!




As many have mentioned in the past, this could be a CD centering issue. And if bad enough, could explain why it won’t play the LD at all.
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 Post subject: Re: Unusual Different - Sanyo LV-K77 Laserdisc Karaoke Syst
PostPosted: 23 Mar 2021, 02:29 
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The lens still doesn't look correct on the inner side. It should be a clear focusing lens. Would you put that on a camera?
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