Re: Yusmart 229IP-P 22" LCD Monitor Dead
sorry for the quality
you should just make out pin 9 is not joined
sorry for the quality
you should just make out pin 9 is not joined
Attached Files
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Ah, I see. It wasn't as obvious in post #11, but your photo makes it clear. Thanks for checking. Also, in your first post, you mentioned that it was an eeprom that was was the cause of your problem. Can you share how you came to that conclusion and how you tested it? What is the part # of the eeprom and whether or not you had to program it. Thanks.Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
I had a Viewsonic with similar board and the same symptoms that was the eepromComment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Great! You just jarred my memory. PlainBill had discovered a reset controller, ASM810MEURF-T (not an eeprom), used on several Acer and Viewsonics that exhibited the same problems here. Replacing that controller solved the problem. Since this monitor seems to be similar to a viewsonic, can you tell if they implemented a reset controller on the Yusmart logic card? It's a SOT-23 case style.Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
I have sccanned the board and listed the SOT-23 package chipsets that I can see....
I have been trying to identify them from what little info they have on the chips but haven't been very successful so farAttached FilesComment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
This site has information on marking codes. You are correct, many of these codes don't appear in the references.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
I would of thought MMBT3906 or PMBS3906Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Hmmm, I can't see them using three WO4 as a reset controller. KL8 seems to be a diode assembly. That leaves SO1, marked Q104 on the circuit board. I would think that the reset controller would be marked UXXX?Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
The main board in this service manual uses TSUMU58WJComment
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For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
I'm starting to think this might be a lost cause
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
I have another logic board on the way, will try and compare thenComment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Completely unrelated I know but just on the off hand...... can anybody identify the component in the image below for me?
It only has a marking of 0, is it a smd capacitor?Attached FilesComment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
It's a zero ohm resistor. Basically a wire link, but making it in this shape enables the same machine that places resistors and caps to place the wire links as well.A working TV? How boring!Originally posted by PeteS in CAComment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Thanks for that, I assume I could replace them with a jumper wire without any issues?Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Umm, why, it isn't showing continuity?A working TV? How boring!Originally posted by PeteS in CAComment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
No, it is a damaged board. A few of them have been smashed off so I was planning on just replacing them with a jumper.
It is only a control panel so hopefully there should be no RF issues
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Hi all,
I have a Benq LCD tv model VP2202 which uses the same power supply as the Yusmart 229IP-P & the Viewsonic VX2235WM-3 Model # VS11446.
My issue is I am trying to get a copy of a service manual to find out what each of the output pins are on the ps board at P802 for example voltages and what they control BRT_ADJ, BL_ON, GND & so on.
I tried the link given in post #1 & #16 but it won''t allow access to the service manual.
I would appreciate if anyone has a pdf copy they could send me.
or even just what the wires do.
The old ps in this tv is completely fried so I am trying to adapt one I have from a Benq FP91G Monitor to suit.Comment
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Re: Yusmart 229IP-P 22" LCD Monitor Dead
Thanks retiredcaps for the link unfortunately I dont have a credit card or paypal account.Comment
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Normally, I never post repairs this quick after I do them, because… I am usually very slow.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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Hi Everyone
Lately I am experiencing the deja-vu incident on one of the led monitor like this.
https://www.badcaps.net/forum/troubl...lashing-on-off
The monitor is HP 27es LED Monitor
https://h30434.www3.hp.com/t5/Deskto...e/td-p/6804692
The monitor will randomly blackout and display no signal and will recover again.
Sometimes need to power and off again to restore the display but... -
Good evening, gentlemen.
I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.
To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
https://drive.google.com/file/d/1L6S...ew?usp=sharing
Things I tried
- Bought a new AC adapter thinking that was the problem but the problem... -
Looking through my repair pictures and notes, it's been a long time since I posted anything in the LCD monitors section. So here goes that.
I'm dedicating this thread to one of the very first LCD monitors I repaired (if not the first one), which was more than 10 years ago now. The monitor is a Wise Wing, model F199. It's a 19” CFL-backlit LCD. I got it for free off of Craigslist in 2009 from a guy, who said he bought it for cheap from Wallmart and the monitor worked only for a little less than 2 years before quitting.
When I saw the Craigslist post, I wasn't... -
My pc:
10850K stock 4800mhz stock Kraken X73 good temps
2x16 GB DDR4 GSKILL 3000mhz XMP
Seasonic Tx-850 Ultra Titanium
Gigabyte Rtx 3090 Gaming OC
Aorus Z490 Pro Gaming
1 TB SSD
4 weeks ago i launched Metro Exodus Enhanced and during cinematic advertisement part ( 30 fps ), pc just shutdown.
Also monitor flickered with NO SIGNAL 10 seconds after shutdown. So only monitor and pc was affected.
Next i pressed only power button, rebooted again and its fine again. Happened once and i cant reproduce.
Power...
Comment