Sharp Aquos LC-32AD5E-BK wont come on

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Ok will get the scope out tomorrow night and give it a dusting off

[truep]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I had a sony 46" with similar symptoms, it was the main board on that one.

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Ok, it might be better if it was the main board, there are many more of these around on eBay than tcon (but maybe this says something in itself)

Will get the scope out later and see

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I would check if there are any waveforms appearing at the LVDS connections.

Any particular pins? Can I use chassis for gnd ?

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Been a while since I did anything with this, my friend couldn't make up his mind if he wanted to fork out for a tcon board.

Earlier this week he gave me the go ahead, so I got the scope out and found some waveforms at CN1 on the tcon board. Also there is 5v there, so i've gone ahead and ordered the replacement.

Will update when it arrives and I get it fitted.

[budm]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I do run into shorted cap in the T-CON board.
http://s807.photobucket.com/albums/y...t=DSC00722.jpg

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Ok, will have a check for one of those, ordered a T-Con already but it's not here yet. Nothing much to loose though, so i'll check later.

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

T-Con arrived - fitted and no luck blank black screen with backlight.

Looks like someone has been here before me - when I removed the old tcon it became apparent due to some security markings on the back of the board - used by an online seller of second hand parts I would assume.

Due to there being waveforms at the input, this would suggest that the panel is bad, right?

<edit> I recall seeing this tcon listed for a Vizio model also - I will check later which model and do some further research under that model #

[netdent]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I have one of these that had faults similar to yours (not seen byme) when I looked at it it was stuck in ext5 (hdmi) but adding input displayed nothing and no buttons worked, bought a main board and it works now, but the freeview is white screen with sometimes vertical garbage line on the right, thinking maybe the set it came from had a diffrent dvb card? looked at service manual but not sure yet if it might be a setting needs changed, if anyone knows would be gratefull

thanks Ronnie

[budm]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I think you need to check all the output voltages of the regulator circuits that are being fed by the SW12V, especially the 5vdc regulator that feeds the T-CON board, the blown fuse is shown in the POWER2 SCH.
See the attached PDF that I extract from the service manual.
As you can see, the SW12V feeds a lot of circuits.

[budm]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Bad panel will not give you balnk screen (there are MANY active parts that being fed by the T-CON board and not likely that ALL have them had failed to give out blank screen), but dead T-CON will give you black screen if you do have LVDS signals feeding it. Check the 5vdc on the T-CON board. Read how T-CON works and how to troubleshoot it: http://www.mediafire.com/?zzjygannjty

I try to upload the PDF but it failed.

[retiredcaps]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I try to upload the PDF but it failed.

The pdf file size limit is supposed to be 9.54MB, but I think there is a bug with the forum software because a few people have tried to upload 5MB pdf files and have failed.

I'm pretty sure it has been reported to the site admin, but so far nothing?

[budm]

Re: Sharp Aquos LC-32AD5E-BK wont come on

The T-CON training is only 2MB. Well, he can download it from the link instead.

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Ok, thanks for the pointers.

The intermittent coloured lines aren't appearing with the new tcon - not sure if it's still intermittent or the new tcon has stopped that part of the fault.

I will have a read over the tcon training pdf tonight when I get home from work. I have already checked for 5vdc at tcon and it is present and without ripple.

[bbjunkie]

Re: Sharp Aquos LC-32AD5E-BK wont come on

It seems this board is quite popular, the Sharp tcon TW10794V-0 and presumably the panel is also used in:

Philips 32PFL5522D
Sharp LC-32GD8E & LC-32SD1E
Toshiba 32HLX95 & 32WLT58
Vizio VW32LHDTV20A

Among others.

I've got plenty of reading material now, no excuses!

[poppik]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Hi guys,
I have the same TV. I'm glad to find some place, where it is discussed.
My problem is not in hardware (I hope), but maybe you can help me too.
TV is fine, but only analog tuner is running. The DVB-T tuner doesn't work. Do you know, how to reset it? Maybe some service menu should helps.
I tried factory reset in standard menu, but after that tv freezes and nothing happened. All settings remains.
I search over the web and found some button combination for similar models to enter the service menu, but nothing works.
I appreciate any help.
Thanks!

[vign]

Re: Sharp Aquos LC-32AD5E-BK wont come on

Was out today at a friends, and he gave me a TV to look at for him

This one is a Sharp Aquos LC-32AD5E-BK - a 32" LCD with dvb-t and analogue tuner.

Brought it home and plugged it in, after 5 seconds or so there's a click from the PSU and the green LED lights on the front panel.

There is no response from the remote, or any buttons on the TV at all.

Will be taking the back off later and will post pics then.

Jim

I have this TV, and have same problems. Green light on but TV wont turn on! Firstly, where did you buy the axial fuse please? From ebay? any part number? Any make? Was it 1.6? or 2.0? have you removed the old fuse or put it on the top of the old fuse?! Is your TV working with replaced T-CON board? or TV is still in the lab for ongoing surgery?! :-)

[pcdoctoruk]

Re: Sharp Aquos LC-32AD5E-BK wont come on

I think you need to check all the output voltages of the regulator circuits that are being fed by the SW12V, especially the 5vdc regulator that feeds the T-CON board, the blown fuse is shown in the POWER2 SCH.
See the attached PDF that I extract from the service manual.
As you can see, the SW12V feeds a lot of circuits.

Sharp Aquos LC-32AD5E-BK
Power board I have changed most of the caps on this board, apart from a few tiny 1mfd to 22mfd caps and all the voltages check out .

the problem is that the sound and tv turns on but the screen has vertical lines down the screen.
after 20 minutes the picture is fine and will work unless the tv is turned off for 2 hours or so and it's back to square 1.

any hints or help would be great..
ps i am looking at getting a replacement board later in the week to see if that works as I am pulling my hair out.
pps all the caps check out within tolerences with my capatence meter... atlas lcr40