Re: technika 17pw 26-3 power issue
cheers fella,
and thanks for your all of your input
unorientated
ian
arc2002
Member
Last Activity: 06-09-2015, 03:14 AM
Joined: 05-30-2015
Location: GLoucestershire
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Re: technika 17pw 26-3 power issue
my stupid bad fellas , false alarm, having been messing around with the set so much with its back off, i forgot that the buttons which are flush touchpad type were on the other side, so all i was actually doing was touching up the plastic frame!!
once i realized what i was doing wrong and actually pressed the on/off the set fired up as it should.....
thats it i am officially declaring myself senile..
ianLeave a comment:
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Re: technika 17pw 26-3 power issue
cheers nope, not until i left it on standby for an hour or so only to find out that its now stuck in that mode arggg
not evena bleep from the tvs side buttons now!!!
oh well back to the drawing board!!!
IanLeave a comment:
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Re: technika 17pw 26-3 power issue
Hi Guy,
good news is that the tv is now working as it should (see attachment), bad news is rather be able to say i tracked down and fixed an issue or two i have to admit that all i ended up actually doing was replacing the mainboard and psu which i purchased from Owen at tvpartsuk (who is a star by the way) all in all the fix cost me around £18.00 mostly due to Owen sending me out a free mainboard after experiencing issues with the first psu board he sent.
Many thanks for ALL your help fellas it really was appreciated....Leave a comment:
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Re: technika 17pw 26-3 power issue
Hi Guys,
small problem with the firmware update, my set does not have a usb port...
I did manage to get the standby light to come on, the problem was a dry contact at Pin 4 (next to the gray with red tracer wire) at header CN115.
The set still refused to boot up, Iguess this will be either down to a corrupt FW or as pointed out previously the lack of Vin at BL_ON.
So a new mainboard and power supply has been purchased.
update to come when they arrive.
IanLeave a comment:
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Re: technika 17pw 26-3 power issue
Hi Fellas,
i was unable to find a schematic for the mainboard, but with closer inspection (put my glasses on) i was able to read the capacitor numbers/board locations and their Vin's, so have now put together a rough drawing (please see attachments) of the board including the corresponding cap numbers and Vins, in my drawing i have underlined the values i see with my multimeter, i did all he readings using a single common board GRD, so looking back if these voltages are all deemed to be correct i still could have a broken GND to a particular...Last edited by arc2002; 05-31-2015, 04:38 PM.Leave a comment:
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Re: technika 17pw 26-3 power issue
Hi Reecey,the standby diodes do work but i only ever see them briefly flash as disconnect from the 240v mains.
Aside from the BL_ON Vin being missing i also have 33v missing from pin 13 does this offer any clues to my issue's?
Would it be possible to bridge any of the missing Vin's to see if physically making them High works?
Ian...Last edited by arc2002; 05-31-2015, 03:23 PM.Leave a comment:
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Re: technika 17pw 26-3 power issue
thanks Alastair,
the board is marked 17MB25-3 , hmm firmware , i am familiar with doing those
is their any chance of reaching a secret service menu via the tv's panel buttons while powering up, and is their a schematic for this mainboard...just so that i prod around checking voltages?
many thanks
ianLeave a comment:
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Re: technika 17pw 26-3 power issue
Hi,
no picture the only sound i get is from pushing the function buttons, which is the bleep tone to indicate the buttons have be pressed.
is their a shcematic available or this mainboard?
Ian...Leave a comment:
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Re: technika 17pw 26-3 power issue
Hi Vince,
many thanks for replying, the details are
Tv model number :LCD32-209V
mainboard number :458073 98843 (UK8.14 L6HY)Leave a comment:
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technika 17pw 26-3 power issue
Hi guys,
i have search the forum and thankfully found the correct schematic for my PW17 26-3, my problem is as follows.
when turned on the standby light does not come on and the tv is effectively dead, but when i check the voltages to socket PL816 I do get some readings,
After changing a couple of caps on the original board i gave up and simply purchased a replacement 'used' but working board from ebay, UNFORTUNATELY that did not solve the issue either.
With both board the same problem, effectively an unresponsive tv, that is until i unplug it from the mains when momentarily...Last edited by arc2002; 05-31-2015, 08:17 AM. -
Re: New Members - please post your introductions here
hi fellas,
cannot claim to be anything other than a newbie here hoping to pckup some tips do's and don't from you all many thanks or being here
arc200Leave a comment:
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