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Search: Posts Made By: budm
Forum: Troubleshooting TVs and Video Sources Yesterday, 06:12 PM
Replies: 31
Views: 1,718
Posted By budm
Re: Insignia NS-46E340A13

Good to see it is running again.
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:00 AM
Replies: 31
Views: 1,718
Posted By budm
Re: Insignia NS-46E340A13

When the TV power cycle by itself, does PS-ON Voltage also swing up and down in sync with the power cycle?
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 09:56 AM
Replies: 13
Views: 203
Posted By budm
Re: NordicTrack C700 Treadmill Dead Console

It looks like c14 and C15 have been replaced before, I would remove them one at a time to see if the shorts go away or not.
Forum: Troubleshooting TVs and Video Sources 06-16-2019, 11:44 PM
Replies: 3
Views: 71
Posted By budm
Re: How to diagnose whether a TV LED is bad (without using an LED tester)?

As Nelic indicated, when using the meter which only puts out very low current or even with the typical LED tester which puts out may be around 30mA or so may show the LED as good but when you force...
Forum: Troubleshooting TVs and Video Sources 06-16-2019, 04:59 PM
Replies: 10
Views: 130
Posted By budm
Re: Samsung UE37C6000 blows fuses

+1. I would replace the PFC IC too.
Forum: Troubleshooting TVs and Video Sources 06-16-2019, 01:43 PM
Replies: 3
Views: 69
Posted By budm
Re: 17mb62-2.5

Then you can test them as long as you have all the needed power supplies that can supply the needed Voltages and current.
Forum: Troubleshooting TVs and Video Sources 06-16-2019, 01:39 PM
Replies: 10
Views: 130
Posted By budm
Re: Samsung UE37C6000 blows fuses

I would removed QP801 first and test it off the board then re-test those that show as shorts again to see what you get without QP801 in place, it can be just one shorted out QP801 MOSFET for the PFC...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 09:24 PM
Replies: 24
Views: 155
Posted By budm
Re: Samsung LN46D630 no picture

Remove the board so you can test the board by itself but you MUST be careful since you will be working in the HOT DEALY side of the circuit so you should at least power the board from GFCI outlet...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 06:07 PM
Replies: 24
Views: 155
Posted By budm
Re: Samsung LN46D630 no picture

The control signals are fine but you do not have PFC boosted Voltage so you need to check and work in the PFC section first to get that 380 ~ 400VDC on the main cap first.
So you need to get the P/N...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 05:53 PM
Replies: 24
Views: 155
Posted By budm
Re: Samsung LN46D630 no picture

Your post #1 shows: DP810 445 ohm
Now it shows as: set to 200k reading is 47.5, that will be 47.5K Ohms which is much higher than 445 Ohms as reported in post #1. Are you 100% sure you reading the...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 06-15-2019, 05:25 PM
Replies: 38
Views: 9,502
Posted By budm
Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Thanks for testing it out at 120VAC, I will order a couple to play with.
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 05:04 PM
Replies: 3
Views: 69
Posted By budm
Re: 17mb62-2.5

You can but how about the power supply for the backlights circuit?
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 04:57 PM
Replies: 10
Views: 130
Posted By budm
Re: Samsung UE37C6000 blows fuses

Samsung BN44-00355B power supply board.
Check the bridge rectifier BD801S, MOSFET's QP801, QP802, QM803, QM804 for shorts.
Check the resistance between the two legs of those 3 main filter caps...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 04:43 PM
Replies: 24
Views: 155
Posted By budm
Re: Samsung LN46D630 no picture

Right now you do not have the PFC Boosted Voltage even though the PS-ON is present. Please upload good clear straight shot pictures of the power supply board top and bottom side of YOUR board, also...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 04:39 PM
Replies: 24
Views: 155
Posted By budm
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 04:32 PM
Replies: 6
Views: 135
Posted By budm
Re: Jvc led tv

So the boost converter is working, but the Cathode return (connected to the LED driver IC) is showing quite high Voltage of 37V, I expect it to be 10V range or so, the high reading may be due to...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 03:03 PM
Replies: 3
Views: 38
Posted By budm
Re: Sony KDL-37U4000 bad colour - TCON fault

The two boards may not have the same FW.
What is the P/N of the U302 on that T-CON board?
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 02:59 PM
Replies: 13
Views: 139
Posted By budm
Re: Panasonic TX-L37E3B Green light but nothing else..

So basically, the broadcaster can screw up lot of people TV's out there.
https://www.theregister.co.uk/2014/03/14/panasonic_2014_tellies_get_freetime_epg/
I am surprise that it can screw up the TV...
Forum: Troubleshooting TVs and Video Sources 06-15-2019, 02:33 PM
Replies: 3
Views: 38
Posted By budm
Re: Sony KDL-37U4000 bad colour - TCON fault

T370XW02 37T03-C00 is the blank PCB P/N which can be stuffed to make many PCBA for various LCD panels as needed.
The PCBA P/N printed on the bar code sticker is the one you want to match.
'If you...
Forum: Troubleshooting Power Supplies and Power Supply Design 06-14-2019, 09:27 PM
Replies: 1
Views: 40
Posted By budm
Re: Help needed identify Diode - PSU FSP Hexa 500W

https://www.badcaps.net/forum/attachment.php?attachmentid=196207&d=1560567083
Did you remove it and test it off the board? It is connected in parallel with the resistor R84 (I cannot cleary see the...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 06-14-2019, 09:05 PM
Replies: 38
Views: 9,502
Posted By budm
Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

They sure have lots of 230V version, 120V seems to be hard to come by on Ali.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 06-14-2019, 03:48 PM
Replies: 38
Views: 9,502
Posted By budm
Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

https://www.aliexpress.com/item/32974173898.html

item #32974173898
Forum: Troubleshooting TVs and Video Sources 06-14-2019, 12:53 PM
Replies: 4
Views: 62
Posted By budm
Forum: Troubleshooting TVs and Video Sources 06-14-2019, 12:33 PM
Replies: 6
Views: 135
Posted By budm
Re: Jvc led tv

1) TV OFF, all connectors in place. Keep the read meter probe on the pin of the red wire (Anode of the LED string) of the LED connector, Black probe on the chassis then turn on the TV to see how high...
Forum: Troubleshooting TVs and Video Sources 06-14-2019, 11:40 AM
Replies: 8
Views: 134
Posted By budm
Re: Samsung UN60H7150AF-has sound, no picture

Thanks for the follow-up on the repair, since it is high demanded board I have a feeling that these boards are not reliable and have issue, hopefully your replacement board will last.
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