Re: Technica M32/57G
if they are startup caps, use 47uf instead.
if they are startup caps, use 47uf instead.
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Re: Technica M32/57G
https://www.youtube.com/watch?v=8lKA...jPdt2RIDn6h67A
ok so turned the tv on this morning all good until i noticed some distortion in colours,i have tried to upload a video to show this so im gathering possible tcon board fault ?Comment
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Re: Technica M32/57G
very strange tried the hdmi lead all good then tried the scart again all working fine ?Comment
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Re: Technica M32/57G
LVDS cable clean and seated both ends? Maybe cold solder joint under processor... Probably not T-con board IMHO...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Technica M32/57G
ok tv yet again is dead all voltages fluctuating shall i change the last 2 caps (due to being from a old board) with 47uf 50v due to running out of stock with the 22uf 50v capsComment
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Re: Technica M32/57G
i say yes.
back when i was doing satellite recievers almost production line style,
we always bumped up the startup cap to the next value.
the plus is it lasts MUCH longer before failing.
the downside on paper is it takes longer to build the initial charge for starting.
i say "on paper" because we are talking fractions of a second - so who cares!
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Re: Technica M32/57G
ok thanks already done this so i changed the two old 22uf 50v caps with new 47uf 50v and now the tv is working again but im still suspecting a fault elsewhere with the psu but ill keep testing
thanksComment
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Re: Technica M32/57G
Maybe a cold joint?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Technica M32/57G
yeah thats what im thinking tom ill run it for a few days then see how it goes,if it goes again then ill check for cold jointsComment
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Re: Technica M32/57G
Ok just a quick update left tv off since yesterday so turned it on this morning still working fine so fingers crossed
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This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
Hi. I got a Vizio with no power or standby, and won't turn on with remote or button. I checked the voltages on the connector and all read 0.00V or nearly 0(0.050 ON/OFF pin). None of the pins are labeled STB for standby although I do see some 5V pins. Other than the obvious standby led, which isn't coming on, is there a way to check for standby voltage on this PS. I'm trying to see if my problem is the PS or mainboard. Some Vizios I have fixed with no standby led me to think it was the PS but it turned out being the mainboard. Any experience with this set would be greatly appreciated. -
Hi all.
I started a thread while back regarding TV power supply standby circuitry as it is something I am not quite on top of.
SMPS theory and function is becoming more familiar, however the standby part is still a bit of a mystery.
Anyway, a friend has this TV with the above mentioned power supply board which has no standby voltage, nor any other voltages leaving the board.
The mains AC comes in fine, gets filtered and rectified with power is on the main filter cap as well as the transformer and drain pins of the ICE3B0665J, but that's it.
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Hello,
I am trying to re-purpose this power supply that I saved years ago from a tv with a cracked screen for a monitor but that is not really that relevent at the moment. I do not recall which tv but a google search looks like it is from Wharfedale LTF37K1.
You may notice I made some alterations moving some components to the top and some wires which are from a 5v regulator I fitted to the 12v output as the monitor requires 5v. The standby was already at fault from the beginning, it has nothing to do with the alterations...
Years ago it had some bulging caps... -
Hello forum. I've recently been given a Yamaha TSX 120 DAB radio and ipod dock. Its working well however when put on standby its using 6.3 watts. The manual states less than 1 watt on standby. I measured this with a plug in monitor which seems accurate with other items. In use it uses around 7.5 watts. Firstly has anyone who owns a similar radio also got a plug in monitor to check if this is normal with this unit? In the first half a second the monitor shows 0.3 watts which I suspect is what it should use but something is switching it to be almost fully powered. I've searched the manual for eco...03-01-2024, 07:25 AM
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