Re: Vestel shorted output diodes
Ive had to swop 2 x MBR5200 in the last 2 month so tried to swop for 2 x P600J diodes but it just cycles on & off so that didnt work.
Anyone know if there is a version with wire legs equivalent for the MBR40250? unless I bend the pins to fit but not sure thats a good idea
or anyone know of any more other than the MBR40250 as suitable replacements?...
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
yes fully boots, maybe it has got 5v and I cant reach the pin on the plug to test it while its on, but I havent found any 5v signals on the top side while powering up, just reading the link......and been searching for a board for it but cheapest ones like £40
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
right so its blinking 4 times twice, then when it reboots it blinks 3 times then 7 times
in standby I seem to lose the 24V off pin 1 and get 1.8v on pin 2
attached is the blink code info that I could find, any ideas anyone, im not familiar with the terms on the sheet, so is P-board is PSU and A-Board Main and also what is SU, SD, SC, SS-Board?...
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
Q212 for the 5v isnt even on the board its empty check pic no.2 right bottom corner of yellow box
and I cant find any 5v signals, found a 3.3 and 12v and 24v, think the 3.3v is for the backlight control and thats it, im gonna run through the testing again tomoz and post results just in case they have changed...
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
ok sound advice, I dont think I read your original post properly before, my bad, problem now is figuring out why its rebooting, voltages look the same on the pins of the schemes anyway apart from there doesnt seem to be any 5v any where
this is gonna be one of them where I may have to guess which board is faulty and at this moment Im thinking it could be the Main Board not the PSU, but Its a vestel so its highly likely to be the PSU.......im getting the meter back out to investigate further, ill see...
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
Right .... so ive changed the Diode and the screen is nice and bright now, but its still switching off rather quickly, it powers up, I press menu, scroll and then it freezes and switches off then powers back on and so the cycle begins
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
Yes Ultrafast one.. MUR460G - £2 off ebay so ordered it.....then found the same ones on RS for 0.34p ....typicalLast edited by shepp; 08-13-2017, 10:23 AM.
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
Pulled the biggest diode off today and it has gone 0 both ways, in the attached Pic of the 2 diodes.
the transformer in which they are connected is the 30068375 transformer not sure what that does but if its to do with the LED backlight then it would make perfect sense
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Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
Hi guys this has just come to me and im not too sure were I should be checking voltages etc.....Vestel board hahaha
I seem to have a voltage bouncing around but not sure if im checking in the right place see attached photo
the set powers up, the hmdi channel info comes up, then after a couple of minutes it will freeze then switch off and on again, its gradually got worse the more I do it......i.e the screen stayed on longer when it 1st started checking it
there is no signs of burning any where or shorts on the board
I have circle...
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Re: Dell ST2320LF Monitor: No power?
nice thread, saved me lots of time guys..... just bought one of these for £1.20 and ive just been scratching my head for about 20 minutes checking the usual stuff until I came across this thread....boom straight to the fault same as this thread, ordered the diodes so the total cost of this monitor should this work.....which i have high hopes....is a staggering £3.30
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Re: Sony KDL-40EX723 - 2 Blinks
Successfully fixed, thank you guys for all your help again
hope everyones had a great Christmas
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Re: Sony KDL-40EX723 - 2 Blinks
just tested Q6701 and Q6702 and its 0 ohms across all pins will remove tomoz and retest :-)
I didnt test them I must of missed them 2, but thought Id tested them......doh!
thank you budmLast edited by shepp; 11-24-2015, 04:13 PM.
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