Re: Dynex DX-32L150A11 Standby Blink
Have to remove and see, sorry!
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Re: Dynex DX-32L150A11 Standby Blink
Haha didn't even cross my mind because everything on top was so overwhelming
Two smd caps on bottom measure short circuit, it's tough trying to use an ohm meter to try seeing if they're bad. Is my only option to remove them one by on and power on?Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Yeah probably. I thought you had looked on the bottom.
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Re: Dynex DX-32L150A11 Standby Blink
You're not going to believe this, all those components in the schematics I couldn't find on board... Are on the bottom!
Even found that second resistor for the regulator so it is a 3.3v output.
Here's what's weird though, in board both those resistors (510 and 820 ohms) measure 313 ohms. Is that because they're on board?Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
I don't know where else to look. Any suggestions?Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
It's really rare to get a dead short across a low power processor like one in this TV, maybe a few ohms but not 0.2 ohms.Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Think I'm chalking this one up as a bad processor.
Found a regulator to use in a junk board, same problem came back.
I traced numerous smd caps that were fed by output of the regulator and all linked to a smd inductor. So I removed it to essentially remove that entire network of caps, problem still existed.Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Would these work?
http://www.ebay.com/itm/US-Seller-10...-/281040404035Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
I found a junk board with a 1117a regulator. Not sure if it'd work?
The one that needs replacement is only labeled 1117Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Ha yeah. I feel like the short is still there. Wonder if it's even worth the hassleLeave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Digikey, eBay... a few bucks and a few days wait (the hardest part about any repair project!)Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
I think it's probably not a 3.3V regulator, doing that could cause damage, you need to replace it with the exact type (1117 ADJ.)Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Since the regulator is not outputting I wonder if I even found the short.
I have some fixed value 3.3v regulators, could I use one to replace it and just put a jumper where the resistor is?Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Such a regulator when using only one resistor has an output of 1.2V.Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Also I'm confused. I looked up that regulator and it says it needs two resistors to work but there's only one connected to it on the board. I've looked and looked, only one. Even found same mainboard on ebay and the picture up only has one resistor.Last edited by ohmmy; 10-27-2013, 08:05 PM.Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Measure one near it, will likely be same value. Typically 100nF. Yes you can use one off a board if it is same value. Do you get 3.3V or 1.8V or whatever at that regulator now?Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Found the short! It was the tiniest smd cap CS27 figured closest to CS28 on the schematic since I could not find that one. I did some continuity measurements and there were three caps all linked together including that one, it was second I removed and boom got my standby light.
With it removed though pressing power button doesn't do anything.
How can I substitute another? These things are so small with no markings. Could I just use any off a junk board?Leave a comment:
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Re: Dynex DX-32L150A11 Standby Blink
Removed cap, back to same problem with regulator in circuit.
I can't find the corresponding caps next to it as shown in the schematic.Leave a comment:
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Hello Everyone, this is my first post and I am excited to be a part of such a great community. I've been reading these forums for awhile and there really is some good friendly people here. No bashing and being rude like 90% of other forums Ive been to. Lets get to the good stuff.
I have two years of college in Electronics Engineering Technology. Ive been tinkering with electronics sine about 1990. I know enough just to be dangerous, so be gentle.
Make: Samsung
Model: UN60ES6500FXZA
Power Supply P/N: BN44-00525A
Symptoms: The TV was... -
I recently got my hands on a 60" Panasonic P60ZT60 plasma tv (european model) that has some strange issues along with an 8 blink code.
It know this tv is getting old but it was once considered one of the best plasmas ever made, and i think it is still holds on to that even by todays standards.
So, long story short. When i first got the tv it had a very bright washed out picture with very raised blacks in all picture modes and i couldn't find the cause in the picture setting menus.
After doing a factory reset this problem was gone and the picture was back to...01-06-2025, 06:02 AM -
This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
I write this to maybe help another with this TV.
So I aquired this TV a 2023 model. It started the 2 blink reboot problem which indicates bad panel. It was still under warranty and the repair man came by.
The Samsung repairman brought a brand new panel and switched my original boards to the new panel. The new panel then had the 2 blink error code. The repair guy said he has seen this and the MAIN board on this model will cause the 2 blink. He then replaced the main/power board (they are both connected) and put it back onto my original panel. Voila it worked.
...03-18-2024, 10:24 PM -
Hi. I got a Vizio with no power or standby, and won't turn on with remote or button. I checked the voltages on the connector and all read 0.00V or nearly 0(0.050 ON/OFF pin). None of the pins are labeled STB for standby although I do see some 5V pins. Other than the obvious standby led, which isn't coming on, is there a way to check for standby voltage on this PS. I'm trying to see if my problem is the PS or mainboard. Some Vizios I have fixed with no standby led me to think it was the PS but it turned out being the mainboard. Any experience with this set would be greatly appreciated.
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