6 month old faulty already i got this this tv second hand its shown no picture bud sound the back lights works perfect, all lit up just no immage on screen done some checks on on panel .12v and 3.3 there , previus owner was told to sent it back at cost £80 quid was told its common fault ,i have no intention doing that rather hopfully fix it
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toshiba 49ul5a63db 6month old
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Re: toshiba 49ul5a63db 6month old
So are you getting 12V at the HVIN_12V test point?
Only 1.8V at AVDD is bad for sure.
https://www.badcaps.net/forum/showpo...7&postcount=13
T-con voltages (typical)
1. Vin (Vcc): 12Vdc or 5Vdc
2. Vlogic,LCM, Vddd,VCC): 3.3Vdc
3. Vda (Vs, Vsource,VDD, Vdda, Avdd): 14Vdc~20Vdc
4. Vgh (Vgon,VGHR, Von, Vddg): 20Vdc~30Vdc
5. Vgl (Vgoff,VST,VGHF,VGHEVEN, Voff,Veeg): -5Vdc~-7Vdc
6. HVDD about 8v
7. DVDD,VDDC 3.3v, 1.2v
8. VCOM about 5~10vdc (about half of Avdd)Last edited by budm; 06-25-2020, 09:33 AM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: toshiba 49ul5a63db 6month old
Originally posted by chrislyons View Postthe guy didint want to pay 80 quid costa and hassle return nothing i can do no paper work
that being said, if a fuse keeps blowing and you cant find a short on the caps, if it is an tcon built in to the main board, i say it most likely a voltage regulator...whether it be a mosfet (check for short at your coils near your fets) or built into a ic ( will need to follow schematic to find sources of mains and follow to tcon fuse, then find pin outs for ic's)....replace main board or troubleshoot, or callnin for warranty repair. Cheers.Last edited by jostewcrew; 06-25-2020, 03:32 PM.
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Re: toshiba 49ul5a63db 6month old
So are you getting 12V to the T-CON? iN YOU POST #1 it shows "done some checks on on panel .12v and 3.3 there" Is that 0.12V or 12V?
Also are you sure you are making good contact with t he cap's end when checking resistance of the cap? I just want to make it is not like this thread with false readings until OP got new meter with better probes and then found the bad cap: https://www.badcaps.net/forum/showth...131#post970131Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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