Onida tv Onida CRT TV Model C021 lqst is having Horizontal Line. I have changed Vertical ic AN 5522, but still same. The osclator ic is MG 1264. Need help

Where the diodeRH3G located please tell.is it for vertical IC supply? Plese reply

Vertical scan output section circuit has the fault. Check it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

You should replace the vertical IC of the same number used with it. No substituiton will go on.

Horizontal line on screen denotes the absensce of vertical sweep itself. Check the vertical output section circuit to LA7840. Check for any loose solder terminals. It will be best to measure the input voltage to that IC from the LOT secondary supply. Try by replace the IC. If these do not help you, measure the frequency from the main IC. It should be at 50Hz. If this frequency is not present, the main IC is faulty. If you wish to get some more details about the circuit, check this link. http://electronicshelponline.blogspot.com/ Pull up older posts there, either by its left side bar, or see it in Timslide option. Schematic diagrams, that show vertical IC LA7840 is given. You can compare it.

Check its horizontal output section circuit for the fault. In most cases {LOT} Line Output Transformer might have to be replaced.

needs a new vertical chip call your local tv repair men to get the job done cheap

This guy is raking in the change on you. The tuner is for over the air signals, now you have a 3 prong connector RED,WHT,BLACK make there connected you can find the AUX,VID-IN by scrolling throught the channels on your TV hope this helps.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

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