 Posted: Sat Apr 03, 2010 7:54 pm Post subject: tv on the blink |
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| hi all
i have a matsui lcd tv model number lm20n2. dont have a picture but the sounds great can it be fixed or sound i get a new tv ...e-mail me @ [email protected] thank |
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| Posted: Mon Apr 06, 2009 4:17 am Post subject: |
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| Nano, micro and pico (farad) are NOT the same. Nano is mainly used in Europe.
Three prefixes (multipliers) are used, µ (micro), n (nano) and p (pico): * µ means 10-6 (millionth), so 1000000µF = 1F * n means 10-9 (thousand-millionth), so 1000nF = 1µF * p means 10-12 (million-millionth), so 1000pF = 1nF So .27uf is equal to270nf or 270000pf |
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| Posted: Sun Apr 05, 2009 11:25 pm Post subject: Matsui LM20N2 |
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| I too have the same problem as you, just wondering if you have managed to source the caps yet, I can see the ones on digikey but the postage as far as i can work out is $59. The caps are only $4. cannot seem to source anything in the UK, have been to all the local TV repair shops around Norwich and nothing.
I can get the whole PCB for $149, but the TV is not worth that sort of money, especially when the components if sourcable are only going to be $10 at most. Also one question, when searching for 0.27uf caps i get alot of results for 270nf is it the same, i get confused with it all sometimes?? Thanks for any info, Mark. |
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| Posted: Tue Oct 14, 2008 10:10 pm Post subject: |
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| i might just have to fork out for a new tv, very anoying, im not taking it to be fixed as they will either rip me off or not have a clue. do u not know which a power board that would work mad proffesor? | |
| Posted: Mon Oct 13, 2008 5:50 pm Post subject: |
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| This "CHIMEI N-3205" looks very much like the Matsui LM20N2.
CHIMEI N-3205 
Matsui LM20N2  |
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| Posted: Mon Oct 13, 2008 5:41 pm Post subject: |
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| If you look at the PCB's you can see the logo for Nexgen Mediatech Inc.
So it looks like Matsui have just rebaged it, so I am trying to find out what the model number is for Nexgen Mediatech Inc. |
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| Posted: Mon Oct 13, 2008 7:06 am Post subject: |
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| Icey: I have not done any more work on this unit since my last post.
But as I said before when I removed Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q14, and then try switching on the unit, the unit powers up, and stays on, but the backlight does not come on. If you shine a bright light on the screen at the right angle you can see that the screen is working, and with a few presses of the menu button, you can get to a program and you will also have sound. I am still trying to hunt down a Schematic for the unit or just the power board, but as yet have been unable to. Can you please let us know how you get on. Best Regards. |
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| Posted: Mon Oct 13, 2008 1:06 am Post subject: Same problem help please |
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| basically i have the exact same original problem as you mad professor tv wont turn on from standby, but i am not very techno savy. all these parts are a little daunting. is it likley to be the same faulty parts casuing the problem?if i could definatley solve the problem by buying a whole new power board (as you originally said)i would be happy to do that. how hard would it be to do this? and could somebody point me in the direction of this power board. thankyou | |
| Posted: Fri Oct 03, 2008 5:41 pm Post subject: |
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Is it the two blue caps against each other(looks like siliconed together)--definitely the cause of txistors shorting out. Value/voltage is definitely critical here;based on your posted numbers, .27 means>> point-two-seven microfard NOT 2 microfarad 250v is working voltage. Ok to use a higher voltage if 250V not available but keep the mf value. Similar to this |
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| Posted: Fri Oct 03, 2008 5:09 pm Post subject: |
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| I have just had a quick look on the internet for ".27" and it looks like this is a 2uF 5% 250v Cap.
Can someone please confirm this before I go and order some new ones. Thanks. |
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