I came across an Apex GB5208 TV last week that someone was going to throw away. Now I hate it when something goes to the dum[ that can be fixed so I figured I'd give it a shot. The TV powers on and once it warms up the screen comes up but I can't get the colors to align properly. I've downloaded the service manuals and went through the S mode settings, but although the screen changed it didn't align any of the colors as I had hoped. Below is a link to a picture of the screen. I figured to see is to understand better. I'm a good electronics tech, but I'm new to projection screens. Any help or ideas are appreciated.
I'm also seeing the same problem however in the manual it states by "pressing the P lock the cursor turns to white". This did not happen & while you can move the colored cursor to where ever you want, you can move the color.
The only way around this might be to physically move the color crt of red & blue as green is what to tweak by.
Of course, minor movements will be obvious & it's difficult to get to the clamps on the crts.
I'm having a similar problem with the same model. did u try going to the menu with 'convergence' on it? by going to that u can manually adjust the red/blue lines. my problem is after doing this, when i turn the set off/on the picture is messed up again. any ideas about that?
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Double images and colors are blurry .Blue,red and yellow wave coming up from the bottom of the screen on the lower left and fuzzy images this is a symptom is for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;
Lines going across is a little vague but there is always the problem with the electrolytics (caps) around the vertical, be sure and get the one on the power supply too. Just change all you can find(usually 4-5). Thre are 2 convergence ic's if you didn't change them both, resolder the other one.
Then check the value on R519 for me.
If the lines are thin and close together running horizontally, it may be the vertical driver, but that usually takes out the resistor and sometimes the diode in the B+ for the vert. Also you must replace the caps that caused the problem in the first place.
Actually you have 3 problems. The two that you listed and the third which is: Apex does not support their units. Ask anyone who has tried to get any service. Your problem sounds like a bad digital convergence box. I fix this problem several times a week but on name brand sets. Cost is usually less than $100 for the part. Some problems with Apex equipment can be fixed if the part is a common off the shelf part. That is not the case with your problem. Apex equipment is cheap for a reason. All posts that I have read say that they do not last long and you can't get parts. That has also been my experience as a technician. We don't even accept Apex units for repair anymore. Next time spend the extra money to buy a name brand unit and it will more than likely be repairable.