Question about Televison & Video
Hi, well you have a fault that is stopping the PSU from turning ON, you see the PSU has protection circuitry that detects any potential faults, that may cause damage or even an explosion, and this then shuts down the PSU, and prevents it from turning ON and powering up, until the "Fault" is removed. This fault is on some other board, this MUST be so, as, if you have replaced the PSU and it still will not work, then it is unlikely that two supplies would be faulty. (A note here, one must also be careful to try and find the fault, or often when a new PSU is connected up, it is immediately destroyed, or damaged, and one can go round in circles if a "Know Good" isn't introduced to start with and worked on out from there. As I teach my students, "Check, are your voltages correct?" always check the PSU Voltages at the sources, and try to locate the faulty "Rail" and work back along it until the fault is found.
It isn't prudent to simply replace boards parts components sort of ad hoc, one must first find the exact cause, and the repair any damage, there, and any damage done.
To even have a shot at a successful repair one simply must obtain a service manual, for your exact make and model, and then work through the troubleshooting procedures to attempt to isolate the exact problem.
However if you don't wish to DIY, then it is my professional recommendation, you should get a "Quote" for repair, from, an, Approved Service Center. Now, this point is very important for a good result, Always contact, their "Local" or a, "Head Office", ask them, for a referral to an authorised servicing center, where you first ask for a "Quote". Now, when you get the information you want, then you can decide as to repair of replacement.
Posted on Mar 31, 2011
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Posted on Jan 02, 2017
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