Re: Magnavox 32md359b/f7 White Screen and with sound only
OK can you test the voltage on it relative to chassis ground.
OK can you test the voltage on it relative to chassis ground.
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Re: Magnavox 32md359b/f7 White Screen and with sound only
What am I looking for, I'm getting 14.6v second slot then 4th slot 4.6vComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
I think it's pin 5 you should be testing.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
Pin 5 no volts,,I'm checking on my schematic to see if it mentions anythingComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Just be careful you're not transposing it with ground, as they are symmetrical.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, so when doing this reading...What would be the best way, I was using the chasis as the groundComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
I'm getting readings from first 5 pins and as I test down on other pins, voltage also seems to be visableComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
on the first pin, I get no voltage and I believe it says INV +16v,Comment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Are you seeing anything on the LCD+16V pins? Hmm, maybe it is a PSU fault after all. I will trace where INV 16V is generated.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
It looks like it's generated from the LCD 16V supply which is protected possibly by an overvoltage protector - it's hard to tell from the schematic, but if LCD 16V is missing, then you will not get power for the inverters.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
Do you have schematic? I can send you what I haveComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Yes. I am working from it when I give you suggestions.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
On that first Pin I get nothing....from top of TV down starting with first pin on power board I get 0voltsComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
My guess is then the main/digital board, which is where troubleshooting gets tricky.
Although I never asked, but what is it in standby? Some TVs use inverse logic where a high signal indicates backlight off.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
stanby? The backlight is on and I can see light light shadow of menu selection as I make selectionsComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
What I mean is, what is the pin you are testing measuring when the TV is off (in standby mode.)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
No voltage on either pinsComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
So it would appear to my limited eye that the main board isn't switching on the backlight (or it is switching it off quickly) which is unusual. Can you post a picture of the connector you are testing, I need to double check it is being tested properly.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
I hope this helps, I placed testing probe next to pin slot I'm testingAttached FilesComment
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Re: Magnavox 32md359b/f7 White Screen and with sound only
Oh, I didn't expect that. I thought it would be some kind of multi-wire connector but it's flat flex.
Can you see an R1035, or R1036, or Q1005 on the top side? They will probably be near that connector you have been probing, on the inverter side.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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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!!
I got this sharp TV that when I first plugged it in it showed the sharp logo and then went to the input screen. This was about 30 seconds and then it showed white screen. Now I can't see anything but white screen. This has a separate TCON and Main.
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?... -
Hello,
I have a Dell G15 ryzen edition (ryzen 5) that turns on but won't post, black screen, keyboard lights on, caps lock led on, fans turns and the battery indicating light is showing 2amber and 1 white according to dell website it's a cpu failure, but i tried few basic things before i open it up i tested the screen by pressing the d button before powering it up but it didn't show anything i tried the ctrl+esc for bios recovery but still black screen i tried refreshing the screen, i plugged it on an external monitor but same thing. Next step i unplugged the battery and kept pressing the... -
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
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!!
what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol! 
i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
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