Question about Akai PDP4294 42 in. EDTV-Ready Plasma Television
When i turned it on this morning, i was immediately greeted by a loud noise and then a pop, followed by a shower of sparks! I pulled the plug but it was all done by the time I got the plug out. Being curious and a strong doityourselfer, I pulled the back cover off for a closer look. I found a char mark on the back cover which helped me zero in on IC2, in the power supply area. IC2 had blown itself apart, taking any numbers it may have had with it. I bet I could solder in a new one if I had it in hand. I believe the IC has seven solder points, maybe six. Are flying sparks, and the associated fire hazzard, a common thing for these high current plazma displays? This would be reason enough to junk this thing and go to LCD!
Nontheless, I am looking for help in identifying IC2 and a source for a replacement.
thanks, Jim in Phoenix
Well, I will tell you Jim that plasma flat screens as a whole are having similar problems without regard to brand or model. Part of this problem with others has been the poor quiet fan cooling setup they have in them to say the least. The problem you have experienced is in the voltage regulator section of your power supply. Without being able to see exactly the section the IC2 is in I would have to look at a good schematic to find the right part # for. However, through my experience oveer the years I usually go ahead and desolder the part and take it to a large electronic supply house and they are usually more often than not able to identify the component for you without a schematic. However as you said and you are correct in thinking that the plasma tv you have may give you a similar problem in the future without any added cooling fans on the back cover. Do not be deceived though because LCDs over 32" and above suffer similar problems with the added one that they have images that actually burn-in to the screen much like computer monitors and that is annoying as well. Even if your tv is more than 2 years old and past the warranty period, you may be successful in getting it replaced with a new one because you have a very common problem occuring here that I know the manufacturer knows about. Most plasmas are rate to have 60,000 hours of use which is 20 years, they just have not developed or been around long enough to substantiate that claim. Good luck and God bless.
Posted on Jan 14, 2009
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Posted on Jan 02, 2017
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