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Search: Posts Made By: guix
Forum: Troubleshooting TVs and Video Sources 03-09-2020, 07:59 PM
Replies: 5
Views: 1,006
Posted By guix
Question How to safely handle a 75inch LCD panel ?

Hello,

I have a Sony KD75XD8505, 75 inch edge-lit tv to repair, unfortunately one of the LED strip was damaged by liquid so I need to open it, but I'm affraid to break the panel since it's so...
Forum: Troubleshooting TVs and Video Sources 03-09-2020, 07:44 PM
Replies: 47
Views: 2,915
Posted By guix
Re: Vizio E470i-A0 Dark Areas After Replacing Backlights

The layers appears to be in the right order. Make sure the background (the white thing with holes for the LEDs) is clean, flat everywhere and not touching the LEDs lenses. Use double sided tape if...
Forum: Troubleshooting TVs and Video Sources 03-09-2020, 02:38 PM
Replies: 1
Views: 510
Posted By guix
Re: Common EEPROM chips

Serial EEPROMs 24 and 25 are in my opinion the most common types, for example AT24C. They all have the same pinout and commands
Forum: Troubleshooting TVs and Video Sources 03-09-2020, 12:41 PM
Replies: 17
Views: 1,981
Posted By guix
Re: Hisense LTDN55K321 Purple backlight?

But the output voltage stay at ~1V when I turn on the TV with the LEDs disconnected, it should be around 170V normally, so there is a problem on PSU, no ?
Forum: Troubleshooting TVs and Video Sources 03-09-2020, 01:40 AM
Replies: 17
Views: 1,981
Posted By guix
Re: Hisense LTDN55K321 Purple backlight?

In fact I have opened the back of the TV and tested the backlight with GJ2C tester, and the LEDs are working but they are all blue too! The tester shows the same voltage for both LEDs channels, and...
Forum: Troubleshooting TVs and Video Sources 03-08-2020, 05:27 AM
Replies: 1
Views: 841
Posted By guix
Re: LG 55UH615 : panel problem, is it repairable?

Forgot to update

As suspected, it was a bad cap at the bottom of the LCD panel, I replaced it using cheap "Yihua 938D smd hot tweezers", worked great, tv is repaired ;)
Forum: Troubleshooting TVs and Video Sources 03-08-2020, 05:20 AM
Replies: 17
Views: 1,981
Posted By guix
Re: Hisense LTDN55K321 Purple backlight?

Thanks Daveatfernie for the warning, I have the same TV and need to replace the LEDs too (not blue, simply no backlight at all), so I will make sure to look for this piece of adhesive...

Can you...
Forum: Troubleshooting TVs and Video Sources 03-09-2019, 12:40 PM
Replies: 1
Views: 841
Posted By guix
LG 55UH615 : panel problem, is it repairable?

Hello all,

I bought a tv LG 55UH615 that has no picture but sound and backlight working. As an amateur I though obviously that it was the TCON board so I bought one, but still no picture with the...
Forum: Troubleshooting TVs and Video Sources 01-02-2019, 06:06 PM
Replies: 6
Views: 637
Posted By guix
Re: Samsung 55inch SmartTV strange artefact

Yes, as said, the problem is not always! Proof is another picture taken the same day, showing screen working without artefact..

Budwich I don't understand why you say the triangle is normal... but...
Forum: Troubleshooting TVs and Video Sources 01-02-2019, 04:30 PM
Replies: 6
Views: 637
Posted By guix
Samsung 55inch SmartTV strange artefact

Hello, I may be interested in buying a TV that has an intermittent problem. Sorry that I don't know the TV model, yet, all I know is it's a 55 inch SmartTV.

The problem is, sometimes there is a...
Forum: Troubleshooting TVs and Video Sources 05-20-2018, 06:31 PM
Replies: 9
Views: 1,023
Posted By guix
Re: Samsung PS51E550 Y-Main

Look on the back of Y Main and with multimeter, test for shorts (continuity) on components attached to the heatsinks, if there is a short between the 2 or 3 legs of the same component then remove...
Forum: Troubleshooting TVs and Video Sources 05-18-2018, 06:57 PM
Replies: 4
Views: 1,330
Posted By guix
Re: Short circuit on Y Buffer board, or bad panel ?

Hello,

So you are saying it is normal to have shorts here, and so this Y Buffer board looks fine ? As I'm still new to electronic, can you explain the purpose of this diode and those 22 ohm...
Forum: Troubleshooting TVs and Video Sources 05-18-2018, 11:50 AM
Replies: 4
Views: 1,330
Posted By guix
Question Short circuit on Y Buffer board, or bad panel ?

Hello,

Someone gave me a plasma TV Samsung PS50C530, which didn't turn on. It's the first plasma TV that I open and try to repair. I have repaired some LED TV but it was mostly simple things like...
Forum: Troubleshooting Game Consoles & Other Weird Devices 05-16-2018, 03:33 AM
Replies: 11
Views: 1,352
Posted By guix
Re: Bad heating element, or something else ?

The case of the oven is properly grounded. Thanks, I didn't think about verifying this ;)
Forum: Troubleshooting Game Consoles & Other Weird Devices 05-15-2018, 02:24 PM
Replies: 11
Views: 1,352
Posted By guix
Re: Bad heating element, or something else ?

It's not much bigger than a microwave.

Not my picture but same oven with original plug.
http://album-photos.imingo.net/photos/recupe/252081.jpg
Forum: Troubleshooting Game Consoles & Other Weird Devices 05-14-2018, 08:02 PM
Replies: 11
Views: 1,352
Posted By guix
Re: Bad heating element, or something else ?

Hello,

Problem solved... Long story short, I had to invert L and N in the plug of the oven, in fact reverting a previous attempt by myself to fix the same issue a few months ago... Don't ask, too...
Forum: Troubleshooting Game Consoles & Other Weird Devices 05-13-2018, 03:29 PM
Replies: 11
Views: 1,352
Posted By guix
Question Bad heating element, or something else ?

Hello!

I have a problem with a multi function electric oven Whirlpool MT66 which is at least 10 years old, it can do microwave, grill, and "pulsed heat".

When I use this "pulsed heat" mode (a...
Forum: Announcements & Related News 05-12-2018, 07:04 AM
Replies: 28,003
Views: 2,433,303
Posted By guix
Re: New Members - please post your introductions here

Hello all, I'm Guillaume from France.

I repair electronic devices but I'm limited by my lack of knowledge about it and have only a digital multimeter Extech EX330 and a component tester T7... I...
Showing results 1 to 18 of 18

 
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