This is an extract from the manual, but the supply is solid at 240V, so this must also be something to do with the output to the motor as well...
shepp
Badcaps Veteran
Last Activity: Yesterday, 02:51 PM
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Location: nottingham
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This is an extract from the manual, but the supply is solid at 240V, so this must also be something to do with the output to the motor as well... -
Thanks for the advice but I thought thats exactly what I was doing?
can you be a bit more specific & point me to some devices to check, its a little bit too vague.... it would be really helpful if you could point them out on one of the pics ive uploaded?
I have refitted the board tonight & retested......
The ticking from the relay has now stopped, which I thought was a great sign, machine booted up fine.....
I pressed Start & it cut off straigtht away with the same error, code 3, before I did anything to it, it managed to actually run but...Leave a comment:
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At present I didnt get chance to take it down to power up again,
but this is the relay circuit below, area in red is the multi point transformer, Diodes at the top.... the one on the right seems to measure what it should,
The one on the left is giving me some readings that are way off the other one so this could be dodgy (wont know til the new ones come & I remove to test & replace)
The 3 pin Yellow area is a STP5NK100Z - N Channel MOSFET which appears to be ok,
& the other 3 pin similar (Left side) is a K10N60A, which again appears to read ok....
...Leave a comment:
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So maybe power it up without everything connected to it? like the screen etc?
I can do this tomoz, I didnt even think about that before I took the board out, what a donut.....
But like I say the voltages going out from the board are all stable, 24V etc, the relay is 24VDC.
I just checked the 2x Big caps 470uF & they both measure 850uF on my meter, they are still fitted though, does this sound right?
just checked the above & they are in fact in parallel & 20% tolerance so all good 👍...Last edited by shepp; 03-26-2025, 02:37 PM.Leave a comment:
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Techno Gym - TGYM ALE A - S6T12 - VSD
Hello People, Not been on here for a long time but I have a treadmill to get my teeth into & I'm struggling to find the problem....
So the machine runs sometimes, but then other times I get the error code 3 for Low voltage, so the low voltage could be the motor output voltage from the drive or it could mean something else, all the voltages seem stable enough, like 24V etc...
On startup from a mains power up the relay at the line input socket clicks in & out constantly which its not suppose to do, so my 1st thoughts are with this circuit somewhere.....
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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?...Leave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
the main board is a 23292153, is the ICS located under the plastic cover? see attached...Leave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
how do I freeze the ics?Leave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
im not quite sure what you mean? I havent froze the spi flash ics....I havent got a clue what that is
but I am now checking U300 out and the surrounding components...Leave a comment:
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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 £40Leave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
will any 17IPS20 PSU work or have I got to look to match the other number on the board?Leave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
ok thank youLeave a comment:
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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?...Leave a comment:
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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...Leave a comment:
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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...Leave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
some components are not on this schematic? is this correct? I cant find C283 C284 and I have no 5v Q212?
some things not quite adding up...Leave a comment:
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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 beginsLeave a comment:
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Re: Panasonic TX-40CX400B - 17IPS20 - DULLSCREEN+ON/OFF/ON/OFF fault
EXCELLENT Thank you...Leave a comment:
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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.Leave a comment:
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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 senseLeave a comment:
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