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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Fallen TV - no picture, sound OK
Hi all, I tried posting this back in my original thread, but I can't
for some reason (maybe it's too old or something), which is why I'm pasting the original message in here, along with my follow up question. Hope this isn't a horrible breach of usenetiquette... On Aug 8, 12:23 am, "Nicole Bischoff" wrote: "Tony Ramone" wrote in message ... Hi all, I've searched around this group a bit so I think I've an idea where my problem may lie, but I thought I should ask anyway, just to make sure. TheTV in question is a Beko 284222WNS. At a recent party in my house, it was knocked off its table and landed on its screen. The weight of it ripped the plug out of the wall socket (and broke off the "Earth" pin, which was actually just a piece of plastic moulded to the plug). Amazingly it didn't shatter, and from a brief look inside, nothing seems to be broken or dislodged (it's a wee bit too heavy to pick it up and shake it to see if anything rattles). When I powered it up, the picture was gone completely, but the sound seems to be OK. I can't feel any static from the screen on power-up so I guess I've got no high voltage. Does this mean a transformer is busted or could it be something else? Any advice would be very helpful, I'm just wondering really if it's worth my while taking it in to be repaired... Cheers, Anthony Maybe you need to read the F.A.Q. for the newsgroup before you post: http://www.repairfaq.org/samnew/tvfaq/tvdropped.htm Thanks, I hadn't seen that, sorry. And thanks for all the tips everyone else. (and now the follow up): I know it's been many months since I last posted on this, but I just thought I'd check with you guys one last time before consigning this TV to the dump. Having read all your posts, and the FAQ, I looked around the board for any cracks, and lo and behold, there was quite a sizeable one running close to what I assume is the flyback transformer. And sure enough it was running right through a fairly big track. So I fixed the crack, then ran some solder and a thin wire along the broken track. I checked it with my multimeter to make sure I had a good connection between either end. The thing is, it's still not working, and I noticed that one of the smaller components near the transformer looks a little burnt (or at least brown - could just be flux i suppose) on the underside (I'll have to check again later which part it was - I can't find the piece of paper that I had written it down on right now), and I guess it could be that, or else maybe the transformer itself is just ****ed. If that's the case is it worth my while trying to fix it at all (bearing in mind that while I do know how to solder and read circuit, I don't really know what's going on on that particular board ). I've already gotten a replacement, but I figured if this one would be an easy fix I'd keep it for the spare room, but if not, then so be it... Thanks again for all your patience. Ant |
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