Tip & How-To about Rock & Ice Climbing

You have no vertical drive, only a small horizontal line across the screen. In older projection TVs this is usually caused by broken solder joints in the area of the vertical IC and possibly over the entire board. Disconnect the power. Remove the back cover. Slide out the boards being careful not to break anything. Some wires may need to be taken out of holders. Usually the board in question is on the right. It will be the one with the flyback on it. The flyback looks like a small cylinder with about 4 large wires coming off of it. They will be rubber and flexible. One each goes to each CRT. You will need to remove the entire assembly to get to the underside of the boards to solder the unit. Sometimes removing the restraints will allow enough room to flip the board over and do the work. Once the underside of the boards are exposed, solder all connections on the boards. Be careful not to bridge any connections. Reassemble the unit and give it a test. If things went well the unit should work ok. If there are additional problems you might have to replace the vertical IC. Thanks for using FixYa. hardrocko

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2 Answers

TV has a great picture but wont "hold it". Keeps going to a single flat horizontal line across the middle of the screen. Tapping on side of TV used to bring it back but now, nothing. Just a line.


Vertical scan output section circuit fault. Absence of vertical scan causes the single horizontal line on screen. Horizontal scan output section is OK. Contact any service technician to troubleshoot the vertical scan output section circuit. If you wish to get some details; check the site linked here. Pull up older posts.Surf the site with patience.http://electronicshelponline.blogspot.com/
Horizontal line fault to CRT based TVs are given.

Oct 06, 2014 | Televison & Video

1 Answer

horizontal lines across middle of screen sometimes


Vertical problem coming from bad solder, or vertical circuit problems!!!
Check for bad solder and capacitors problems in vertical circuit.

Aug 30, 2009 | Hitachi 60SBX78B 60" Rear Projection...

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