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Search: Posts Made By: budm
Forum: Troubleshooting Audio Equipment Today, 09:18 PM
Replies: 1
Views: 27
Posted By budm
Re: Behringer Truth B3031A wont power up

You need to start checking Voltage first, see those two devices in TO-220 case form factors, they should be for + and - regulated power supply.
You should check the Voltages on all 3 legs to see...
Forum: Troubleshooting Power Supplies and Power Supply Design Today, 09:13 PM
Replies: 2
Views: 12
Posted By budm
Re: Trying to find correct input/output voltages for an inverter transformer.

We need to see the pictures of the board so we can see what we are dealing with first.
Forum: Troubleshooting TVs and Video Sources Today, 09:12 PM
Replies: 3
Views: 21
Posted By budm
Re: Vizio E601i-A3 - No Power Issue

OL means it went it went over 20V which the meter cannot display, so you need to set the meter to higher scale so I can see how high it goes up to, and after that we will put on dummy load to see if...
Forum: Troubleshooting TVs and Video Sources Today, 06:16 PM
Replies: 2
Views: 14
Posted By budm
Re: Vizio E500I-AB

We need pictures to see what we are dealing with.
Forum: Troubleshooting TVs and Video Sources Today, 05:18 PM
Replies: 3
Views: 21
Posted By budm
Re: Vizio E601i-A3 - No Power Issue

Is this the exact match to your board?
https://www.shopjimmy.com/vizio-09-60cap000-00-power-supply-led-board.htm

What DC Voltage do you have when you measure between the two legs of cap C202 (or...
Forum: Troubleshooting TVs and Video Sources Today, 05:12 PM
Replies: 32
Views: 283
Posted By budm
Re: Identify The Chip??? Vizio E480i-B2

O.L (Over range (too high) for the meter to display) and 0V seems like the circuit is in startup/shutdown loop.
And you look at the DC Output of this standby power supply, do you see any DC output...
Forum: Troubleshooting TVs and Video Sources Today, 05:06 PM
Replies: 25
Views: 237
Posted By budm
Re: Bush LED32982HDT video / image problems

The T-CON has to match the LCD panel, when TV manufacture buys the LCD panel, the panel comes with the T-CON board, and most of the time also comes with the backlights driver board.
Some time the TV...
Forum: Troubleshooting TVs and Video Sources Today, 02:28 PM
Replies: 32
Views: 283
Posted By budm
Re: Identify The Chip??? Vizio E480i-B2

That is fine, I expect that Source resistor will blow open circuit when that IC blew up.
Did you verify that the rectifier on the cold side of that standby power supply are OK?
There are two...
Forum: Troubleshooting TVs and Video Sources Today, 01:56 PM
Replies: 32
Views: 283
Posted By budm
Re: Identify The Chip??? Vizio E480i-B2

May be you should lift one leg off the board and check it again.
BTW, did the IC blow its top just like the one in post 1?
Forum: Troubleshooting TVs and Video Sources Today, 01:54 PM
Replies: 11
Views: 67
Posted By budm
Re: Vizio M602i-B3 No Backlights

Since the LED drivers circuit are integrated into the Main board, so there is no BL-ON pin that usually goes to the power supply/LED driver board like typical TV.
Forum: Troubleshooting TVs and Video Sources Today, 01:52 PM
Replies: 384
Views: 425,199
Posted By budm
Re: LCD TV and Monitor basic troubleshooting guides

Info about T-CON:
Info provided by http://tvrepairsolution.blogspot.com
http://tvrepairsolution.blogspot.com/2016/04/regularconventional-panel-rowgate.html
Forum: Troubleshooting TVs and Video Sources Today, 01:47 PM
Replies: 11
Views: 67
Posted By budm
Re: Vizio M602i-B3 No Backlights

I believe that is too low, I expect about 20Vdc or so.
378vdc is OK.
Forum: Troubleshooting TVs and Video Sources Today, 01:46 PM
Replies: 32
Views: 283
Posted By budm
Re: Identify The Chip??? Vizio E480i-B2

1) You are working in the HOT Deadly side of the circuit so the Black probe of your meter should be connected to the negative leg of the main filter cap C120.
2) If you measure the DC Voltage...
Forum: Troubleshooting TVs and Video Sources Today, 01:34 PM
Replies: 32
Views: 283
Posted By budm
Re: Identify The Chip??? Vizio E480i-B2

1) What did you use for GND ref. for the meter?
2) Which board are you working on, the one on post 1 or post 10?
3) If it is the board is post 10, then check the Source resistor R601 to make sure...
Forum: Troubleshooting TVs and Video Sources Today, 10:21 AM
Replies: 25
Views: 237
Posted By budm
Re: Bush LED32982HDT video / image problems

http://tvrepairsolution.blogspot.com/2016/04/voltage-supply-voltage-displaylcd-panel.html

See page 10 and 11 too: http://www.beyondinfinite.com/lcd/Library/Tianma/TM070RDH01.pdf

Also here:...
Forum: Troubleshooting Computer Displays Today, 09:45 AM
Replies: 9
Views: 98
Posted By budm
Re: Dell E2310Hc LED Conversion Project

https://www.badcaps.net/forum/attachment.php?attachmentid=183182&d=1537834614
So based on the pictures, it can take 10 ~ 30V input so no need for using boost converter board.
Forum: Troubleshooting Game Consoles & Other Weird Devices Today, 09:31 AM
Replies: 28
Views: 305
Posted By budm
Re: LG Washer/Dryer Power Fail

What is the Voltage and current rating as printed on the FAN?
Forum: Troubleshooting TVs and Video Sources Today, 09:28 AM
Replies: 25
Views: 237
Posted By budm
Re: Bush LED32982HDT video / image problems

What you are seeing on the screen is due to bad GAMMA Voltages.
Forum: Troubleshooting TVs and Video Sources Today, 09:26 AM
Replies: 18
Views: 195
Posted By budm
Re: Lg32lb561v power supply(i think?) problem

Make sure to turn down the backlights level to as low as you can to extend the life of the LED's.
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:43 PM
Replies: 11
Views: 67
Posted By budm
Re: Vizio M602i-B3 No Backlights

https://www.badcaps.net/forum/attachment.php?attachmentid=183192&d=1537849060
What DC Voltage do you have on the + legs of those two caps? 15V?
The filter caps (C313, 314, 315, and C321) for the...
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:36 PM
Replies: 11
Views: 67
Posted By budm
Re: Vizio M602i-B3 No Backlights

This is going to be tough because we need to find out if the LED driver circuits are getting the BL-ON signal or not.
The power supply board does have all the output Voltages, correct?
And you can...
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:24 PM
Replies: 11
Views: 67
Posted By budm
Re: Vizio M602i-B3 No Backlights

It looks like it have many many LED strings used in that panel.
So does the backlights even flash on for seconds at all?
Did you take the pictures of the LED strings?
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:19 PM
Replies: 25
Views: 237
Posted By budm
Re: Bush LED32982HDT video / image problems

T-CON for that LCD panel you provided: https://www.shopjimmy.com/lg-6871l-2467a-t-con-board.htm
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 10:16 PM
Replies: 28
Views: 305
Posted By budm
Re: LG Washer/Dryer Power Fail

Also verify the RCD snubber for that SMPS IC are still OK.
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:09 PM
Replies: 11
Views: 67
Posted By budm
Re: Vizio M602i-B3 No Backlights

That is just power supply board, the LED driver circuits are on the main board.
You need to upload pictures of the whole back side of the TV showing all the boards.
There are more than one version...
Showing results 1 to 25 of 500

 
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