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Search: Posts Made By: Louis82
Forum: Troubleshooting TVs and Video Sources 09-19-2018, 09:07 AM
Replies: 26
Views: 1,157
Posted By Louis82
Re: XBR-55X850 turns on but no pic no 12v on t-con

I meant Davi.p - any guidance you could provide?
Forum: Troubleshooting TVs and Video Sources 09-19-2018, 09:06 AM
Replies: 26
Views: 1,157
Posted By Louis82
Re: XBR-55X850 turns on but no pic no 12v on t-con

I'm currently having the same exact problem. I believe the issue is the screen (agree with David). I have tried multiple firmware updates with USB and everytime the results are different, which is...
Forum: General Electronics Technical Discussion 09-14-2018, 08:15 AM
Replies: 5
Views: 1,170
Posted By Louis82
Re: Updating LCD TV Firmware

Some flash drives wont work. No matter if its formatted as FAT32. The only drive that works for me is my 12 years old flash drive but is only 1GB. New Tvs requires 2 GB. I'm struggling with this...
Forum: Troubleshooting TVs and Video Sources 07-10-2018, 03:03 PM
Replies: 3
Views: 619
Posted By Louis82
Re: SONY KDL-55EX500 issue

I'm currently having the same issue. TV is acting very strange. Light in front goes green but no backlight, image or sound. Sometimes green light is not even on, looks completely dead.
Opened TV,...
Forum: Troubleshooting TVs and Video Sources 05-23-2018, 04:38 PM
Replies: 167
Views: 32,100
Posted By Louis82
Re: LF501EM5F No Power, Chirping/Beeping Transformer

Have you guys been able to find the Value or part number to order that cap location C3214?

Thanks!
Forum: Troubleshooting TVs and Video Sources 05-11-2018, 11:29 AM
Replies: 1
Views: 208
Posted By Louis82
Liability Insurance for TV Repair Techs | Recommendations | Comments

Hello,

I'm currently at the situation where I would like to purchase a General Liability Insurance that covers my In-Home Tv Repair Services ( I travel to customer house)
Do you all know about...
Forum: Troubleshooting TVs and Video Sources 04-25-2018, 12:34 PM
Replies: 23
Views: 1,929
Posted By Louis82
Re: LG 55UF6450-UA with white screen

Thanks. Took in consideration what you have said, made the short with pin 44 (which follows to the fuse just like 45, 46, 47,48) and things did not change at all.
I gave up. It would be great if the...
Forum: Troubleshooting TVs and Video Sources 04-21-2018, 11:15 PM
Replies: 23
Views: 1,929
Posted By Louis82
Re: LG 55UF6450-UA with white screen

Hi there,
Iím having the same issue here.
Questions:
Where is the VDC and Pin 44? I own a microscope and still canít find them.
All I see is VCC and VDD (marked with red color on picture)

I...
Forum: Troubleshooting TVs and Video Sources 04-10-2018, 01:51 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

UPDATE: Tv is Fixed!

@Budm : Yes, The diode blew as soon a I plug the power cord in.
So, The problem were the 30 Diodes I ordered from a vendor at AliExpress.
I got some new ones from an eBay...
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:40 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

These diodes are bad. Im gonna remove these filter caps.
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:34 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Good board - Filter cap checks 0 ohms and 2V DC
Bad board - Filter cap checks 4 mega ohms and -0.3 V DC
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:22 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Yes new diode on the board check less than 1 ohm. I have 30 of these crapy diodes. I made te comparison above with one unused diode.

Now this is strange, filter cap on board checks 4.0 mohms -...
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:08 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

I think I figured out. I found a good board that uses the same Diode, I removed it from board and the measuring is different to my "new" diodes from Aliexpress.

Here measures (good diode):
Pin...
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 10:29 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Here is a pic of Diodes. Left side is the original one.
Please tell me they are not the same. I need a reason to understand this.
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 10:22 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Correct, MOSFETS still measuring fine. Diode is shorted. Replaced with exact part number. Wonder if this Diodes are chinese fake components.
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 10:05 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Replaced PFC IC SPC1012T and the same, diode location DP807C keeps blowing.
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 05:07 PM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

I found NT811 cracked, replaced all burned parts except PFC Ic and still the same.
Last try will be the PFC IC but I canít tell the part number of it.
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:56 AM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

So you think the PFC IC is what it damaged my diodes. Because after I replaced the MOSFETs, I plugged in the board and the Mosfets remain doing fine, no short.
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:32 AM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

The blue dot is a 4.7 ohm that I found burned.
Red dots are the ZH and ZG diodes.
Yellow is a 10kohm resistir that test good but looked a little bit up so I removed it to replace it anyway.
...
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 11:09 AM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Thanks for the SMD Code Book gents - Still wondering if the numbers written vertically mean anything. I been going through my scrap boards and I have found ZH diodes but they also show 1F, 1H written...
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 12:31 AM
Replies: 35
Views: 1,231
Posted By Louis82
Forum: Troubleshooting TVs and Video Sources 03-22-2018, 12:26 AM
Replies: 35
Views: 1,231
Posted By Louis82
Re: Need help with my Samsung UN55JU7500 random "flickering" in the middle of the tv

Hi there,
I'm working on repairing the power board for this TV UN55JU7100.
Power Board part number is BN44-00811A. I have found two diodes shorted but not sure how to order a replacement. Can you...
Forum: Troubleshooting TVs and Video Sources 02-26-2018, 04:42 PM
Replies: 13
Views: 14,820
Posted By Louis82
Re: Panasonic 15th Gen 2012/13, intermittent not powering on or standy LED - power ou

Hey folks,

Where can I purchase this IC U203. Can't find it anywhere - Part number I'm looking for is the one TW2005 provided TCZAA6755U and FAN6755UWMY.

Thanks in advance!
Forum: Troubleshooting TVs and Video Sources 12-22-2017, 02:06 PM
Replies: 6
Views: 384
Posted By Louis82
Re: BN44-00780A Blown Fuse - Troubleshooting

Ok After 3hrs, It's Fixed.

Issue was the IC loc ICP801. I removed a new one from a board I had, swapped it and it worked. Filter cap measures 450v same with LED driver out.
Will provide update...
Forum: Troubleshooting TVs and Video Sources 12-22-2017, 10:50 AM
Replies: 6
Views: 384
Posted By Louis82
Re: BN44-00780A Blown Fuse - Troubleshooting

Ok Budm.
I made a mistake of forgetting to put all blue caps back. If you see my picture I was missing CP815. However, I put it back and still same problem. Only 170V on Filter cap and no relay...
Showing results 1 to 25 of 213

 
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