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Zenith Z37LZ5D 37 in. LCD TV - Page 8 Questions & Answers
Does old Zenith Allegro Console Stereo - 8 track/AM/FM/turntable, have a belt drive phono? I can see metal gears to drive the stuck turntable .
The manufacturers of such items would usually buy in such hardware as record turntables from fairly standard catalogues.
One popular brand of turntable was the BSR but the design of other brands were similar. The metal gears aren't for driving the turntable but to drive the multichange mechanism so when one record has finished playing another will drop from the stack loaded onto the extended centre spindle.
This type of turntable is driven by a synchronous motor with a multidiameter spindle via a moveable idler wheel equipped with a soft rubber tyre. Lack of maintenance causes many problems and as the rubber tyre ages it tends to harden and lose traction on the inside of the steel turntable so when the record reaches the end and the metal gears engage there is insufficient torque and everything stops.
It is for that reason many older examples have had the multichange removed or disabled.
Removing the turntable centre motif should reveal a circlip which when removed will allow the turntable to be removed for maintenance.
My Zenith E44w46L HDTV LCD
The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
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