800_Rocks Posted October 26, 2019 Share Posted October 26, 2019 Just got a new to me SC 1224 Color monitor today. It was packed well but I can’t get a good image on it. I show an image the seller took (looks to be working fine). Then how it looks when it arrived (I get a pretty good image but it only takes the middle 3rd of the screen). I tried all the adjustment screws, when I make the image taller, the top half of the screen has big gaps. Do you know if this is something that can be fixed? BTW I hooked a good second SC1224 up to the same 1040STE and the image was fine so the ST is doing its job. from seller: best I can get is this image that uses only the middle 3rd of the screen When I adjust for a taller image the top half has these crazy gaps and there is a bright white bar across the middle. Quote Link to comment Share on other sites More sharing options...
800_Rocks Posted November 2, 2019 Author Share Posted November 2, 2019 Any advice? Thanks Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted November 2, 2019 Share Posted November 2, 2019 Most likely some capacitor(s) in vertical deflection are weakened. It's job for TV service man normally. Quote Link to comment Share on other sites More sharing options...
800_Rocks Posted November 2, 2019 Author Share Posted November 2, 2019 2 hours ago, ParanoidLittleMan said: Most likely some capacitor(s) in vertical deflection are weakened. It's job for TV service man normally. Thanks. I’ll see if anyone in my area services such ‘TVs’ these days. Quote Link to comment Share on other sites More sharing options...
mikro Posted November 6, 2019 Share Posted November 6, 2019 If you trust the seller, it's possible some capacitor and/or potentiometer has just a cold solder joint, i.e. it got damaged / twisted / disconnected during the transport. 1 Quote Link to comment Share on other sites More sharing options...
+tf_hh Posted November 18, 2019 Share Posted November 18, 2019 On 11/2/2019 at 3:55 PM, 800_Rocks said: Any advice? Thanks IMHO it´s absolutely worth to fix this monitor. The SC1224 has a superb picture quality and real CRT feeling at it´s best. The picture you get now should exclude problems with the flyback transformer, one of the expensive parts to replace. Like nearly all monitors and TVs after +30 years, the main problems are: - Cold solder joints, specially because only single sided PCBs are used - dry electrolytic caps Most SC1224 I´ve repaired only with resoldering the main PCB and replacing the most important capacitors. Herewith I mean: Every cap used in high voltage area (when there´s more than 50V printed on the cap) OR with a value equal or more than 100 uF. Of course it would be perfect to change all, but IMHO this is not really necessary. Disclaimer: Every CRT uses high voltages with the risk of an electric shock and may harm you. In doubt don´t try this by yourself. Contact an experienced TV repair guy or friend with such skills. 1 Quote Link to comment Share on other sites More sharing options...
tjlazer Posted November 23, 2019 Share Posted November 23, 2019 Anyone have a cap list for this monitor? Quote Link to comment Share on other sites More sharing options...
snarkdluG Posted November 23, 2019 Share Posted November 23, 2019 1 hour ago, tjlazer said: Anyone have a cap list for this monitor? Dev-Docs have the service manual for it. I think you can find what you looking for in there. 1 Quote Link to comment Share on other sites More sharing options...
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