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Search: Posts Made By: senndogg
Forum: Troubleshooting Computer Displays 07-26-2021, 09:25 AM
Replies: 19
Views: 9,215
Posted By senndogg
Re: Samsung Syncmaster T220 2 seconds to black

Yes. Just check if "4502C"is written on them. In my experience, changing them has resolved issues with late 2000s Samsung monitors.
Desoldering and soldering is better achieved with hot air + solder...
Forum: Troubleshooting Computer Displays 07-25-2021, 11:32 AM
Replies: 19
Views: 9,215
Posted By senndogg
Re: Samsung Syncmaster T220 2 seconds to black

Hi, Ori!

Please check if the 2 mosfets under the board are the AF4502C.

Changing these would fix the monitor in most cases.
Forum: Troubleshooting Computer Displays 07-25-2021, 11:21 AM
Replies: 2
Views: 654
Posted By senndogg
Re: HP 1955 - Backlight not working

Hello fabianard and welcome to the forum!

This is a well known problem which i remember very well, repairing lots of these Benq PSUs.

In general, there a 7 elements failing, 4x C5707 , 2 x...
Forum: Troubleshooting TVs and Video Sources 07-24-2021, 06:25 PM
Replies: 9
Views: 981
Posted By senndogg
Re: Vestel 17MB130P short circuit on 3.3V

Maybe you should inject a 3V from a more powerful power supply (or battery) to this rail.
If you are lucky, a smd capacitor will blow up, and the short will clear.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-23-2018, 09:19 AM
Replies: 7
Views: 1,858
Posted By senndogg
Re: Emachines E725 no power

Bravo djema dhe urime per dijet!
Me vjen mire qe ne Shqiperine tone te vogel ka persona qe mund te ndihmojne dhe jane ne lartesine e eksperteve ne kete faqe. Bravo!
Forum: Troubleshooting TVs and Video Sources 02-22-2018, 11:41 AM
Replies: 3
Views: 1,129
Posted By senndogg
Re: Samsung UA32F40000AR Not Switching on

The culprit stays in main cpu. So were we told at the official service repair center. In the F6000 smart models the issue relays in the emmc. Both chips are bga.
Forum: Troubleshooting TVs and Video Sources 11-30-2017, 02:18 AM
Replies: 6
Views: 1,812
Posted By senndogg
Re: Sony KDL32EX302 picture problem

Hi, sorry to revive this old post, but this was just to clarify same problem.
Totally fault of the samsung lcd.
cheers.
Forum: Troubleshooting TVs and Video Sources 10-17-2017, 10:13 AM
Replies: 18
Views: 6,892
Posted By senndogg
Re: Vestel 17IPS61-3 power board with no output (fried primary)

What do you mean by main capacitor? the 400V big one? If there is no voltage here you should also check the 4 diodes and why not, change them.
Forum: Troubleshooting TVs and Video Sources 10-17-2017, 05:21 AM
Replies: 38
Views: 3,505
Posted By senndogg
Re: Lg 55lv5500 - ta

If the chip overheats in seconds for sure it is faulty, very common. For reflowing i would recommend using a usual cooking plate as a preheater, cover any connectors or sensitive components with alu...
Forum: Troubleshooting TVs and Video Sources 10-17-2017, 05:10 AM
Replies: 18
Views: 2,272
Posted By senndogg
Re: bn44-00264a Does anyone like a puzzle? Please help!

If that voltage is dropping that means that sth is overloading the whole system. After some minutes of working tv can you check the mainboard for excessive heating components? The processor itself...
Forum: Troubleshooting TVs and Video Sources 10-16-2017, 03:33 PM
Replies: 18
Views: 2,272
Posted By senndogg
Re: bn44-00264a Does anyone like a puzzle? Please help!

Are you confident to measure the voltage accross these caps? You can attach the negative probe to the heatsink in the hot side and with the red probe try to touch the positive leg (if you can) of...
Forum: Troubleshooting TVs and Video Sources 10-16-2017, 03:14 PM
Replies: 18
Views: 2,272
Posted By senndogg
Re: bn44-00264a Does anyone like a puzzle? Please help!

Can you link us to the kit at SHJ?
Forum: Troubleshooting TVs and Video Sources 10-16-2017, 03:04 PM
Replies: 9
Views: 1,602
Posted By senndogg
Re: LG 50PN450B, first attempt :smoke, worth it trying again?

thank you for your time and efforts guys. Sadly i ran out of ideas so handed the faulty tv to the owner.
It is still a mystery to me why it arced like it was working on thousands of volts, no kind...
Forum: Troubleshooting TVs and Video Sources 10-12-2017, 08:44 AM
Replies: 9
Views: 1,602
Posted By senndogg
Re: LG 50PN450B, first attempt :smoke, worth it trying again?

The lower flex was isolated well with the rubber adhesive. To my surprise the upper flex started arcing with a loud buzz. Am i missing sth? Is this more complicated than just some IGBTs in the Zsus?...
Forum: Troubleshooting TVs and Video Sources 10-12-2017, 04:28 AM
Replies: 9
Views: 1,602
Posted By senndogg
Re: LG 50PN450B, first attempt :smoke, worth it trying again?

Managed to find some similar IGBTs from salved pcbs. The arc is definitely there with a loud buzz. It is inside the chassis near the flex, i made an illustration.
Now it seems strange to me, why...
Forum: Troubleshooting TVs and Video Sources 10-11-2017, 08:27 AM
Replies: 9
Views: 1,602
Posted By senndogg
LG 50PN450B, first attempt :smoke, worth it trying again?

Hello, its been a while since i havent been active in this forum, but now i am back in the business.
Here s the story:
A 2014 Lg 50" plasma recycling.
Disconnected the VS connector from the psu....
Forum: Equipment Usage, Soldering, Techniques, and Reviews 04-23-2015, 08:19 AM
Replies: 37
Views: 7,772
Posted By senndogg
Re: Bga Pads Lift Repair.

this is the ATI chipset with embedded hd4200 graphics. 1/4 of the pins are either NC or double connections to GND or VCC. So if you are lucky, give it a try as it is, and maybe everything will work....
Forum: Troubleshooting TVs and Video Sources 12-22-2014, 05:55 AM
Replies: 5
Views: 2,450
Posted By senndogg
Re: sammy LE37C530, bad touch panel or mainboard?

FYI, i did not order the mainboard because of excessive costs.
But, the TV returned after more than a year around several technicians, and this time i immediately ordered a new mobo from UK....
Forum: Troubleshooting Game Consoles & Other Weird Devices 10-07-2014, 03:15 AM
Replies: 27
Views: 8,191
Posted By senndogg
Re: PS3 Fat RLOD reflow and now overheating message

Glad to help, dont forget to put the ac socket first before assembling.
Forum: Troubleshooting TVs and Video Sources 10-06-2014, 11:40 AM
Replies: 8
Views: 1,758
Posted By senndogg
Re: Samsung LE40A65A1FXXA

The very last one which is still in my workshop for 3 days is beyond repairable.
Had success only with ones which bonds are VISIBLY disconnected from the upper pcb. Any other could be just a...
Forum: Troubleshooting TVs and Video Sources 10-06-2014, 10:08 AM
Replies: 8
Views: 1,758
Posted By senndogg
Re: Samsung LE40A65A1FXXA

I am impressed how frequent we are seeing the LxxxA65x panel fail. I have had more than 10 cases this year in my very modest workshop.
Forum: Troubleshooting Game Consoles & Other Weird Devices 10-06-2014, 02:16 AM
Replies: 27
Views: 8,191
Posted By senndogg
Re: PS3 Fat RLOD reflow and now overheating message

cool! i will adopt your method for my next ones. the chip looks really intact, with a modified blade there always were scuffs and cuts.
Forum: Troubleshooting TVs and Video Sources 10-04-2014, 11:06 AM
Replies: 4
Views: 1,922
Posted By senndogg
Re: TOSHIBA REGZA 37RV555D no pic

can you test the display with a flashlight? if you see image that means that the lcd/tcon is ok and you have to bring the backlight.
Forum: Troubleshooting TVs and Video Sources 10-04-2014, 10:25 AM
Replies: 17
Views: 3,044
Posted By senndogg
Re: Samsung le32r73bd

check this out. worth a try:

http://www.badcaps.net/forum/showthread.php?p=467710#post467710
Forum: Troubleshooting TVs and Video Sources 10-04-2014, 03:55 AM
Replies: 18
Views: 5,324
Posted By senndogg
Re: Samsung LE22C450

Reddish/pink ccfl indicates failing ones. They are probably drawing much power, just a little bit more than this psu can handle.
Failing ccfl-s is a bit unusual for Samsung but maybe this one has...
Showing results 1 to 25 of 299

 
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