Re: grundig vlc4120 c .. does not turn on ..
gonna rip it a part tomorrow and see what i find
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Re: grundig vlc4120 c .. does not turn on ..
when i woke up i was going to continue but now there is no purring .. no dim, 12v or 24v
all i get now is 5v, 1.5v on bL and stby 1.1v
and nothing was done since last nite .. BL worked and now it don't .Last edited by Hjolli.hardar; 10-26-2014, 07:57 AM.
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Re: grundig vlc4120 c .. does not turn on ..
T-con fuse gives me 0v, 0.2 ohm .. so i gues no power is heading there ..
the main board is VEV190R-4 v-0.. seems to be LG manufactured though it comes up in searches as Beko, Grundig or Lg like all the boards on this one ..Last edited by Hjolli.hardar; 10-24-2014, 04:05 PM.
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Re: grundig vlc4120 c .. does not turn on ..
got backlight on now 1.770v .. purring almost disapeared .. but i get no pic.
the measures i was posting come from the cold side.
i just hit the hot side diode by accident and noticed the purr change.
but it seems the problem lies in these q's i just put back in .. nothing else has been done though the window is open and it's blowing a bit cold straight down on the tv ..
gonna try connecting some sound to a source and see what happens
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Re: grundig vlc4120 c .. does not turn on ..
nope .. only get 5 volts to 5 voltplug.. and I've been watching the light better and it seem to be dim at plugin then brighten and dim again .. blue diode.
but of course only when main board is connected .. only diff i see when pushing on of button is a jump in main(big) cap about 1 volt.
It looks like dirty electricity it's not stable in the power supply .. out of the diode d105 i mentioned i'm seeing jumps from 1v to 180v and the main strans former purr changes.
also when i put my metter on q102 and q101 .. mid leg...Last edited by Hjolli.hardar; 10-24-2014, 09:42 AM.
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grundig vlc4120 c .. does not turn on ..
Grundig also known as beko and seems to have a lot of LG boards.
here is the service manual [url]https://www.scribd.com/doc/111572913/grundig-chassis-sx-26-32-37-42vlc4120-9040-9041-9141-3001-9140-6120-32-40vle811-6141-7140-7150-7160-8140-801DVBS-8041S-8042S[/url]
powersupply type fsp337-3f01
ok i get only 5 volt's when nothing is connected to the power supply.
when i connect i get
5v
12v
24v
dim 3.3v
standby 1.1v
bl 0.014v
and starnsformer purring.
when plugged in my blue light starts dim the brightens...
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Re: New Members - please post your introductions here
Ello from Iceland
Raised by electrician always been a tinkerer and i so like electricity... it so much fun.
Got first computer a speccy zx48k with rubber keyboard when i was 7.
Like to take things a part and get them to work.
Been studying electrician and heading for electronics about time some say at 42.
been mostly in the computer biz since 95 fixing the loveable windows and do allkinds of computer work.
I've always wanted to go into the electronics so here i am been doing...
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