I have a Zenith C27A24T the picture is out of focus.
I have a neighbor kid who took the back off to see if he could fix the video connections. (too many games of PS2 disconnecting to the back have broken the connections at the board.) When he put it back together the picture lost its focus. Any suggestions on how to get it back, or if it's even worth sending outfor repair?
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Re: I have a Zenith C27A24T the picture is out of focus.
If there is no other problem, he probably touched the focus adjustment in the back of the set. Open up the back and locate the flyback transformer (part with large red wire coming out the top). There will be 2 adjustment controls on it. One should be labeled screen, the other focus. Adjust the focus until crisp.
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hit your TV lightly on left side or right side or on top & then observe ..........you will get normal picture or it comes & again it goes....if it is happening like that then following is the situation..........after 4 or 5 yrs in some TVs on main board (also on circuit board that is fixed to CRT TUBE ) at some soldering joints crack develops....then due to loose contact picture becomes small in size or disappears or rolls ( in your case )...........when we hit that lightly then those loose contacts joins temporarly & again picture appears for some time............so solution is ......TV main board should be observed carefully & most of the joints should be re-soldered.......only a good service engineer can do that........even after hitting TV lightly if there is no response then main board has to be checked completely........in your case iam sure it is loose connection problem.........joints should be re - soldered ...100% it works again................this problem cannot be solved by user unless user has idea about components( resisitors, transisitors, diodes,...etc) , have soldering iron , multimeter & other tools....................so contact good TV service engineer
There is a focus control on all CRT sets. It would be on the back of the set. It might be accessible or it might be inside which would involve removing the cover off the set. This is not recommended as there is very high voltage present in there. If it is accessible from the back without removing the cover there will likely be two little plastic knobs. One marked "F" for focus and the other one marked "S" for screen.........don't rotate the screen control, adjust the focus until your picture becomes clearer. If this doesn't help a whole lot then your picture tube might be shot and that means time for a new TV.
There are 5 RCA connectors on the back of this TV, (according to the manual). The lower three from left to right are Video in, Audio Left in, Audio Right in. There are also two RCA connectors above these that are the L/R audio outputs. Also, there is an S-Video input which I would recommend using instead of the RCA Video in. You'll still need to use the RCA inputs, but the S-Video will give you the best video connection into this monitor.
There are connections on the back of your TV for Audio and Video inputs. You connect the corresponding connections to your DVD player. You then use the TV/VCR SOURCE button on your remote to change to that input. In case you don't have your manual the following web address will take you to a place that will let you download the manual.
Dark picture? hmm. meaning there is no brightness variation, assuming this is the fault I think U might be having low screen voltage. Check for high value ( around 2W) resistor, preferably from 100K to 680K on the "C" board or neck board. Post back Rifaa
sitnlisten - yes it does appear your pix tube is getting weak,but we may be able to turn up the flyback alittle to brighten up the picture.If you take the back off you will see the flyback-large black unit with a wire going to the round rubber cap on the back of the pix tube.Look at the flyback there are usually 2 adjusters one marked focus the other screen,just turn up the screen a little bit at a time.If you turn this up too much you will wind up with retrace lines on the screen.You may also want to check the pcboard ass'y for a sub bright adjust,and same thing small adjustments.If this don't help your pix tube may be too far gone.I hope this helps. cooltek Feb.1/08