 Posted: Tue Oct 28, 2008 6:40 pm Post subject: Re: not that fault |
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Try to change all Elco's in the Powersupply (sorry for my bad english, i'm german) |
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| Posted: Tue Jan 22, 2008 10:55 pm Post subject: toshiba 42 wh 18b no picture |
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| picture teletext board pdo267 from caracus can not find it on my42wh18b is this for another tv where is it located on 42wh18b i had same problem as guest 12 dec 07 now the on off button lights up but nothing at all happens no clicks buzzs nothing last night it switched its self on off three times in 2hours now nothing . | |
| Posted: Wed Dec 12, 2007 11:25 am Post subject: not that fault |
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| hi i tried that but not fixed it, sometimes if i keep turning tv on and of and on and off it will come on, once its on its great but if you turn it off again you have to keep hoping it will come back on and usualy it takes a lot of on off's? I hear two relay's click on when i turn it on and off again when i turn it off. sometimes i hear a slight crackle. when it comes on it great picture so i dont want to scrap it. Any idea's? |
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| Posted: Sun Oct 29, 2006 9:38 am Post subject: |
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| i would like to add at this stage resoldering of the memory chip on this module is very difficult even with expensive professional equipment ... the memory chip tends to bow up slightly either end when heated during soldering process and therefore making it difficult to achive good contact that lasts ... although i have made succesful re-flow jobs of this using an Infra-Red SMD Soldring Station you also have to have the chip weighted at either end normaly to achieve a good long lasting result or otherwise it is possible that it will fail again a few months later .... so i would genrally recomend replacement with the new type module which so far has not suffered these issues ..... so take the teletext module out and run the set for week without it and if all is ok without in get a new one..... |
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| Posted: Sun Oct 29, 2006 9:18 am Post subject: |
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pic of teletext module  |
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| Posted: Sun Oct 29, 2006 8:50 am Post subject: |
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| the early teletext module's on the 42WH18B are very unreliable and go faulty for a passtime .... in fact out of the hundreds of sets i have looked at that it is fitted to this virtualy always the problem for many issues including stuck in standby as well as some other symptoms ...... the newer replacement teletext module is very reliable in fact out of hundreds of set that it's fitted to i have come across the new type has never gone wrong so far.... to proove it's the teletext module without having to buy a new one first, simply unplug it and take it out .... the set will run perfectly ok without the module in ... u'll just have no teletext on analog TV of course |
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| Posted: Tue Oct 10, 2006 5:50 pm Post subject: |
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| It is very often the teletext module maybe post a photo of the pcb which is most right seen from behind. And then maybe I can tell you which ist the teletext module. | |
| Posted: Mon Oct 09, 2006 8:13 pm Post subject: |
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| If it is not solder joints (you have replaced them all?) check all of the capacitors. (especially the electrolytics) | |
| Posted: Mon Oct 09, 2006 8:04 pm Post subject: |
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| I also have the same problem. can any one tell me how to identify it or where to fin a schematic advice greatly received |
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| Posted: Thu Feb 24, 2005 3:18 pm Post subject: |
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| i have the same problem. how do i get to the text board? which one is it!!?? thanks for you help anyone! |
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