Re: Help finding alternative rectifier (SF3006PT)
Thanks but Digikey and Mouser were out of stock. Ended up ordering on eBay from a German seller. 2 week wait time… we'll see....
curt2199
Senior Member
Last Activity: 04-14-2022, 09:35 AM
Joined: 10-17-2013
Location: Illinois
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Help finding alternative rectifier (SF3006PT)
I'm working on my treadmill motor control board and found a short on the motor side. The rectifier SF3006PT is shorted across 2 legs. I don't believe I got it back on the heat sink properly when replacing the bridge rectifier that had gone out which lead to it getting hot and blowing about 30 mins into a jog. I've looked around and most of what I'm seeing is at least a month out from China. I'm wondering if anyone has an ideas on a suitable alternative that I could find within a week or so stateside. Below is the Mouser data sheet.
[url]https://cdn.badcaps-static.com/pdfs/85cd1... -
Re: Hisense 58R6E3 (Backlights, sounds, no picture)
Done. Disconnected both and connected one at a time. No change....Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
I couldn’t find what normally looks like a fuse to me but I did get 12v, 3.3v, and 1.8v at different spots on the board and the t-con has a green light lit at the 1.8v spot. The only thing that seemed suspect to me is an area marked (with a perimeter line) 15v near the input cable from the main board is only showing 1.1v.
I did pull ribbon cables from the t-con to the panel driver boards and didn’t see any change.
I can get a photo of the t-con shortly.Last edited by curt2199; 08-17-2021, 10:57 AM.Leave a comment:
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Hisense 58R6E3 (Backlights, sounds, no picture)
I'm working on a Hisense 58” R6E3 $398 Walmart special Roku TV. I picked it up free as the previous owner just said the picture went black so I assumed I'd be doing LED strip repairs. As it turns out the backlight is working fine, the TV responds to remote signals as I can here the typical Roku menu sound effects. My first thought after some typical voltage checks was a bad t-con board so I ordered an eBay damaged set pull for $5. Swapped it out and no change.
Before I order a replacement main board, I wanted to see if anyone else had seen similar issues with this set? I pulled... -
Re: Modifying LG Power Supply to prevent overdriving LEDs?
Just replaced one bad diode on the 55”. Time to put it back together. Gave the guy $40 for the TV last night. Alsways nice when a plan comes together. Lol. Now to do the same to the 47” to upgrade my bedroom tv....Leave a comment:
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Re: PlayStation 4 shuts off immediately after hdmi port repair
I actually tried that with no luck. I've had terrible luck with repairing PS4 hdmi. Last one I didn't notice but had a tiny solder bit bridge the last two edge pins and powered on to smoke and dead ps4. Even with my microscope I missed the solder. I have 3 systems sitting on the shelf now. Lucky they were dirt cheap.Leave a comment:
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Re: Modifying LG Power Supply to prevent overdriving LEDs?
Picked up another 47 and 55 tonight. Lot of these LGs with dead leds.Leave a comment:
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Re: Modifying LG Power Supply to prevent overdriving LEDs?
I have been pressing the strips back down and hot gluing the edges to keep them in place as well as creating some glue straps across the raised “pegs” that are used to keep the strips in the right place. As far as I can tell the cooling effectiveness should be factory. If the driver is driving them at a higher current than they’re rated for then the cooling won’t matter in the long run because they’ll still burn out. I noticed several diodes that were much dimmers than others when testing them...Leave a comment:
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Modifying LG Power Supply to prevent overdriving LEDs?
I just fixed another LG 47” by swapping bad diodes for good ones. I noticed a repair service when googling that claims to modify your LG power supply to stop it from overdriving the LEDs and burning them out. Does anyone happen to know the gist of what they're doing as I'd like to do the same. I don't like repairing and reselling these TVs knowing the same problem will most likely pop up again. -
Re: PlayStation 4 shuts off immediately after hdmi port repair
There are two long screws that go through the power supply to the case but I don't see any screws to secure cables or fan? Are we both talking about a PlayStation 4?...Leave a comment:
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Re: PlayStation 4 shuts off immediately after hdmi port repair
I don’t follow. There are no screws for the cables and fans....Leave a comment:
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Re: PlayStation 4 shuts off immediately after hdmi port repair
I have a magnifying glass and good lighting. I soldered some sewing needles to the test leads on my fluke dmm so I could get in and probe each pin easily: I’ve doublechecked and each pin has continuity with the board and have also probed adjacent pins to make sure there are no bridges.
Also from what I’ve read a problem with the hdmi port and chip wouldn’t keep it from booting up? Ifhat were the case it wouldn’t have booted up from the beginning because whoever worked on it before...Last edited by curt2199; 10-07-2017, 09:51 AM.Leave a comment:
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PlayStation 4 shuts off immediately after hdmi port repair
About to pull my hair out, picked up a PS4 with a botched hdmi repair. It would boot up fine to the solid white led. I removed the mess the previous “shop” made and installed a new hdmi port. Tested all the pins for continuity. I put it back together and now it beeps, turns blue, shuts off after about a second. The only info I can find is about sticking washers under the Heatsink bracket to temp fix an APU that needs a reball. I don't see how me taking it apart and repairing the hdmi port suddenly caused the apu solder to crack. The power supply testes fine and I also cleaned the apu and applied... -
Re: Panasonic TC-L42U30 No Standby
ideas?Leave a comment:
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Re: Panasonic TC-L42U30 No Standby
Fuses good and cap is good....Leave a comment:
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Re: Panasonic TC-L42U30 No Standby
Ok, so I'm testing this with the board pulled and plugged in.
I had desoldered that IC already and resoldered. The IC is an a A6051m like mentioned.
Here are the values in reference to hot ground at the rectifier:
1:0
2:0
3:0
4:0.642V
5:5.09V
7:165.4V
8:165.4V
In testing those I tested the standby pin with hot ground and am seeing -4.8v... maybe that doesn't mean anything because went tested against the case or board ground I get 0V....Leave a comment:
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Panasonic TC-L42U30 No Standby
I've been trying to diagnose the problem with this power supply for a week or so and am struggling to find it. I've pulled several caps and they tested ok, have tested the bridge rectifier and have 168.5V DC out of it. I ended up finding a 470uf cap (right side of pic) in the standby power circuit that had been twisted on the board and was shorting. The solder on the cap looked factory and after untwisting it had a good 1/4" between the board and the bottom of the cap. I de-soldered and pushed it down on the board. I'm not sure how it ended up that way but I'm wondering if it killed other...Last edited by curt2199; 09-25-2017, 08:53 AM. -
Re: Sony KDL-55ex720 tab bond problem and TCON?
Yeah I figured as much. It was free so was just hoping I could make it work. I'm not ok t anything and I'll pull the boards and put them on eBay.Leave a comment:
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Re: Sony KDL-55ex720 tab bond problem and TCON?
I also tried hearing the cable to see if it would self-stick back together but that didn't work.Leave a comment:
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