Question about Combination Televisions
The power supply is shutting down for one reason or another. This unit has 4 shutdown alarms feeding the main processor. It doesn't take much to trip it and believe me, it's a ***** to find it if it is a subtle condition. The VCR could be shutting it down as well if it is not reset exactly right.
This is what I did with the one unit I worked on; It would shut down after 5 seconds. The picture was good when it breifly came on -- but it shut down anyway.
IC1601 is the shutdown opto isolator that will shut off the supply. I removed it and the set came on. After a few minutes one of the power supply diodes started smoking so I unplugged it. The diode, D1618 was bad so I replaced it and the TV worked. But, I could not put IC1601 back in without it still shutting down. I spent hours searching and couldn't find anything. Since it was my son's TV (which he found at the dump) it was OK by me. BUT, if you remove this IC, (it is a four pin located near the yellow transformer) the set will come on no matter what. Just remember, if there is a problem, it will show up quickly. Maybe a new troubleshooting method? Ohms law troubleshooting? No, unfortunately not. Just be careful and try to find the problem.
If you google this model number, you will find a free schematic that --someone-- uploaded to a free schematic website.
Posted on Nov 08, 2008
Your TVCRDVD problem by VCR system gear has been wrong,need to reset,or(check R -roler)
Hope it will help your fix it,good luck
Posted by Guest on Dec 27, 2008
Posted by mizdee24 on Oct 29, 2008
Posted by jaymarlow77 on Oct 05, 2008
Posted on Feb 19, 2009
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