| steve1001908@outlook.com: Mar 25 09:57AM On Fri, 24 Mar 2023 07:46:12 -0700 (PDT), Charles Lucas >etc... >The government mandated after 2008 that all TV's made have to shut off if no >signal is going to the proper input within several seconds. One of my Samsung does that but the other one doesn't. Both are LCD installed after 2008 but I don't know when they were made. |
| Bob F <bobnospam@gmail.com>: Mar 25 06:34AM -0700 On 3/24/2023 5:58 AM, Anthk wrote: > but I'll try to find the manuals later. > Could it be related to an issue with capacitors? > Thanks in advance. My first big flat screen TV was ans old Zenith 50" plasma which was a dead freebie. I opened it up, found a bunch of swollen capacitors, Ordered, received, and replaced the bad capacitors, and it worked for years until I gave it away, still working. |
| Charles Lucas <clsnowyowl@gmail.com>: Mar 25 07:20AM -0700 On Saturday, March 25, 2023 at 8:34:40 AM UTC-5, Bob F wrote: > dead freebie. I opened it up, found a bunch of swollen capacitors, > Ordered, received, and replaced the bad capacitors, and it worked for > years until I gave it away, still working. Before checking any other issue, verify the power cord is ok, and the surge protector and outlet (electrically) is verified ok before proceeding with further repairs. Especially check for bad electrical grounds. I usually verify these things before cracking open the TV, because it is efficient this way and saves time, in addition to ruling out some external cause for creating an internal problem. Then think to the time of the failure of the TV for a moment. Was there an unusual situation when it failed? Was there a storm? Was there a brown out or black out? Anything else unusual? Again, ruling out external causes relating to the internal problem you suspect is on the TV. If it is indeed a problem with the TV internally, then I would check with the usual suspects, based upon the common failures or problems associated with that model. Someone mentioned swollen capacitors, there's also power supply issues, regulated B +, Invertor board issues, resistors, diodes, and a plethora of the usual suspects in terms of other electronics components, not to mention checking for bad solder joints, bad connections, etc... There is a lot of time spent tracing problems out. Based upon the model, I would hone in on the usual suspected causes of failure, then look for the isolated cases to determine cause and efficiently provide for a more pinpointed, accurate diagnosis. Consult the service manual and other professionals for assistance. Use your tools and equipment effectively and wisely to help provide for a solution to the problem. Good luck. Charles Lucas |
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