Just as a side note, if you find a good screen with a nice large TFT panel or OLED etc, you can always get a LCD panel driver for about $20-30 from ebay and you can use just the panel, without any other electronics.
You just need a driver board, and the LCD/OLED panel, that's all. So even if everything else is fried, as long as the panel works you'll have a working monitor. you can check the boards from here: https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311&_nkw=lcd+driver+board&_sacat=0 Best regards, KG0KHN On Wed, Sep 8, 2021 at 5:08 PM Mark Brantana via BVARC <[email protected]> wrote: > You may have heard me complain that the monitor I used on my Windows > machine went kaput on me. After some trial and error I learned I could > split the monitor case open and get to the electronics inside. Here I > discovered three electrolytic capacitors “puffed out” and so I replaced > them. There was definitely something wrong. For example, a 1000 uF cap was > measured at about 240 uF, and a 740 cap was running somewhere around 350 > uF. I was sure that I had found the culprit, and so I buttoned everything > up and tried it. Easy peazy. Well, not so much. It continued to fail and so > this was where I decided to quit, keeping to my motto, “You never want to > give up, but you always need to know when to quit.” Some things are not as > important as taking the preverbal high ground. > > From my investigations on the BVARC site, I knew that there are plenty of > these monitors around for little money cash. Last night I pulled the > monitor apart one last time before unnecessarily commending its body to the > sea; my garbage; one more DIY repair that did not work. There was simply no > way that I was going to proceed without the bench space and time to work on > it, or some idea of what might likely be the primary issue(s). This old > monitor power supply was loaded with types of capacitors and MOSFET > transistors, which I know can fail with time. “A man’s got to know his > limitations.” I had given it my best. > > But wait. This was no failure. It was a learning experience. I would have > held on to the thing if I had not carelessly scratched the plasma surface > with a screwdriver. I ultimately learned that the plasma screen is where > the real money is but the power supply is usually what fails. For grins, I > searched for and easily found exact replacements for the power supply > available all over the internet. You just punch in the model number and > version of the board. What’s more, this same board is found in name brand > and knock-offs of all sorts, meaning that probably the rest of the monitor > was likely the same, and that the only difference might be the plastic > case. What is more, you can do this same thing with all kinds of > electronics boards. > > It is worth mentioning my belief that the cause of the failure was a power > surges due to the many lightning storms and power outages we have had this > year. (Global warming is not going to defeat me! No sir-ee! "My head is > bloody, but not bowed.” Though, I did kind of bang my head while I was > crawling under my desk.) > > If I had to do it again, I would buy a verified replacement power supply > for around $30 delivered. This is not likely to happen though, since I will > now run my computer and monitor through an APS. > > Mark > N5PRD > > Comments listed above are not necessarily my own. Names might not have > been changed to protect the guilty. > > > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/ > -- Gokhan KORALTURK
________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
