Mitsubishi LT-5V Linear Tracking TT issue

[Northwinds]

Well, when Dan and I picked this up, it was supposed to be dead. The tonearm was flopping around but I opened it up and the trolley system string was undone. I put it back on correctly and voila, everything works

BUT

When I hit play, the tonearm just tracks to the end of the record. After researching for a few hours, I tracked down that this uses photo sensing lights to determine position of the tonearm in conjunction with the record size so it appears that one of the lights is blown. I found that it uses a total of (5) 3mm x 7mm lights in this sensing setup. 3 in one area and also two for the centering of the tonearm. Anybody ever worked on something like this? I did attempt to adjust the lead in adjustment screw but it had no effect even though I could feel it turning either way so the light is the issue

Here is a vid of it in motion after I fixed the tonearm issue

http://vidmg.photobucket.com/albums/v514/maxwedge426/DSCF9930_zpsqger3m0o.mp4

 

[orange]

The LT-5V is listed under Mitsubishi-Diatone on vinylengine.com.

Manuals, brochure and specs at http://www.vinylengine.com/library/mitsubishi-diatone/lt-5v.shtml

Membership required for downloads, worth it!

 

[orange]

This is VERY helpful...only two types by part number!

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[Northwinds]

Thanks Steven, I will probably just flip the TT on AK unless someone here wants it. I am not interested in keeping it even remotely. It's cool but I am not looking to have a conversation piece laying around unused. Looks like it needs very little ( dustcover and the lamps). Everything functions smoothly otherwise