Re: Magnavox 32md359b/f7 White Screen and with sound only
13.87, 84, 92, 99............ Those are the readings of all 4
13.87, 84, 92, 99............ Those are the readings of all 4
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Re: Magnavox 32md359b/f7 White Screen and with sound only
On the 20k ohm range? Any decimal points to report? Most of those transformers look off (all are more than 3% out from each other) but the real bad one is probably the "13.87" one.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Ok readings went as follows 13.87 , 84 , 92 , 99 readings seem really closeComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Ok I understand what your saying now,Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Can you show a picture of the meter in the setting you are using just so we can be sure it is OK. When probes are not touching do you see a "1"?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: Magnavox 32md359b/f7 White Screen and with sound only
On 20k ohm 13.87 13.84 13.92 13.99Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
yes when probes aren't touching I do see a one, sending picture nowAttached FilesComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
This is amazing help your giving me, I just would like to extend my thanks regardless of fixing or not,,,Wow I'm very greatful
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Re: Magnavox 32md359b/f7 White Screen and with sound only
I am happy to help. Any TV saved from landfill is a victory.
All your transformers are fine they are well within spec. Next check, see picture. Use 200V DC range. I have no idea what it should be, other than around 50V, from what I heard of this chassis, but it is really unconventional.
I am suspecting you may have a broken CCFL tube inside the screen, but to find out you will need to take it apart - literally pull the LCD off - and it's not an easy operation and one that is easy to mess up.Attached FilesPlease 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: Magnavox 32md359b/f7 White Screen and with sound only
186 volts tom66,Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
I don't understand why it would be broken unless it fell right? So in taking this off, is this a repairable job at a low cost?Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
We have seen bulbs on this forum which have cracked without obviously being dropped - at least according to the owners. I don't know how or why it happens, but it seems to be happening. Perhaps some internal pressure of small crack introduced at the factory damages them.
What is the voltage rating on that nearby big capacitor? 186V is very high. Far higher than I expected. Again this chassis is alien to me though so I am not sure what it should be.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: Magnavox 32md359b/f7 White Screen and with sound only
470uf/100V that is the rating on the Cap itselfComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
It shoudn't be 186V then if the cap is only 100V rated. Maybe that test point is incorrect. I am checking the SM now.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: Magnavox 32md359b/f7 White Screen and with sound only
Ok on one side the left side it reads 186 on the right side it reads 56, from description points from above picture...Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
It's definitely 186 volts though...Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Point closest to Cap reads 186V....furthest side reads 56Attached FilesComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
It may be that I told you to test the wrong side. 56V seems much more reasonable I recall someone else here had around 50V.
I have looked at the schematic and they use a very dodgy feedback scheme which looks like it doesn't have a specified voltage.
There should be a pin marked BACKLIGHT-SW on the connector "CN201". Can you see it?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: Magnavox 32md359b/f7 White Screen and with sound only
I see pin CN201 not marked backlight sw, but it is next to the flat ribbon plugComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
On my printed paper schematic it does list it as that, I'm with you nowComment
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Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen... -
Another TV topic!!
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The TCON is getting 12V and several parts are as well but the VGH line is only .5Volts which I thought is totally incorrect.
Am I on the correct assumption that the TCON is bad somehow if I'm only getting that voltage or is there something else I should check?... -
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I ordered a supposedly ‘new' Tcon board this time, and... -
so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
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