hennegan
Member
Last Activity: 02-26-2011, 06:21 PM
Joined: 09-13-2010
Location: Houston, TX
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Hello. I was wondering if you would please tell me the values of C203 and c205 on your Sceptre power board, image "old.front.jpg"? I have the exact same power board in my Sceptre X9G-Naga III. Thanks -
Re: Sceptre X9G-Komodo II* blinking power light
Another month goes by, but I finally found some time to get back to this!
I replaced all the power secondary caps, MOSFETs and the rectifier, and while doing so, found a blown resistor (pic attached).
It's 15mm long body with a 5 mm diameter. .29 Ohms ±5% I believe.
I cannot find an exact replacement for this anywhere. So the question becomes: Can I replace this with something of a slightly different rating with little/no risk to other components? Say, a resistor rated for .27 or .3 Ohms?... -
Re: Sceptre X9G-Komodo II* blinking power light
They are mostly [B]Elite[/B] caps from what I can tell.
Spot-on! Amazing. I wish I had tested rectifiers/FET before removing. At this point, I'd rather put in new ones while I have them out.
Correction on D104: Identifier is actually FCQ10U06 I believe.
Given the attached datasheets, would these be correct?
D104: [url]http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=RB215T-60-ND[/url]
D105: [url]http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MBR20100CTGOS-ND[/url]...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Thanks again Retiredcaps
It's definitely not a CCFL issue as the display works fine with a working inverter board, but the more I read that thread, the more I feel this board is showing symptoms of a defective MOSFET.
I pulled all 3. I'd like to test them, but not sure if my digital multimeter could do it. Would you be able to help ID them for replacement? (pics attached)
D104:
N 4 G
FC010U06 (I think)
174
(No clue on this one)
D105:
N 4 G...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Happy new year all and thanks RetiredCaps! Good news: I got one of my power boards working.
Replaced RT101 thermistor with this:
[url]http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=495-2092-ND[/url]
Replaced DB101 diode bridge with this:
[url]http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=KBP206GDI-ND[/url]
Also had to replace F101. The only somewhat aggravating thing is I can hear a faint high-pitch noise that I can't pin-point, so I'm guessing this one...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Holy cow--this is a gold mine of info--thank you RetiredCaps.
I set my multimeter to 200 Ohms to test the DB: 1-2, 1-3, 1-4 read 1 (no change); all others read .2. I tested the same DB on my original, defective board, and it was 1 across the board (good right?). Unless my multimeter is bad (entirely possible after my last mis-hap), I think that may be the culprit. I'll order those and read up on those parts, then post an update after replacement.
Symptoms of the original board: Panel works normally for about...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Hi RetiredCaps & Alexanna!
- I replaced C105 on my original board, but to no avail. I'm not sure what to try next at this point. Since there is no other defective part visible under my magnifier, anything I would try to replace would be a shot in the dark.
- I also replaced F101 on the new board that I destroyed by accidentally shorting 2 joints near the AC plug. When I tested that, I blew RT101. An image is attached; could anyone tell me what this is?
- For this newer board, I am thinking...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Update:
After further investigation, F101 is this fuse:
[url]http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=F3298-ND[/url]
Don't know why I didn't realize this earlier since it's printed right on the board :/
C105 (the big cap) is 400v, 100uF. I believe this is a comparable part:
[url]http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=565-1469-ND[/url]
None in stock @ digikey unfortunately, but found in-stock @ Mouser:
[url]http://www.mouser.com/ProductDetail/United-Chemi-Con-UCC/EKXG401ELL101MMN3S/?qs=4%252boambldWwZ%2ff2LDY23Ggw%3d%3d[/url]...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Hi again all,
Thanks in advance to anyone who returns to this thread to refresh their memories & help out. I'm sorry it has been almost 2 months since my last post here--quite a bit has happened (family/medical stuff, increased load @ work due to layoffs, etc.).
First off, a related & somewhat funny story: I broke down & purchased a replacement power board for my monitor from Sceptre for $65 shipped (rip-off, I know). I now had a working original, a working replacement, and a defective original....Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Thank you Mistery--that is a very helpful image.
And thanks as well to Alexanna. I have never soldered anything on such a small scale (usually just home wiring with a Weller gun), but will give it a shot. I need to get a more precise soldering tool. I'll search the forums, but if anyone has any threads bookmarked that has some beginner tips (iron temp, solder type, etc.) I'd be grateful; don't mean to stray from this thread's topic though....Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Thank you Jetadm123! I guess symptoms would help--can't believe I neglected to post those too.
When the screen is powered on with a signal (VGA or DVI), The screen displays for a half second, then goes black. The power LED remains on after the panel goes black. If the screen is turned off/on, the screen comes on again for a half second. I don't believe it is [just?] the CCFLs, as I can see nothing on the panel under a bright light source when on. When this first started, I found that if I power-cycled it enough, it would...Last edited by hennegan; 09-13-2010, 09:34 PM.Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Thank you RetiredCaps. My apologies for hastily jumping in with nothing to work from.
Some starter pics attached. These were re-sized from 3000x2000 (Nikon D80), so please let me know if larger samples would help.
The large cap has some leakage around one post. It reads "PS(M)105°C (C)04052"
On a side note, I thought it would be worth a shot to e-mail Sceptre directly to inquire about a replacement part. The replied "...we will need a serial number off the power board. It...Leave a comment:
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Re: Sceptre X9G-Komodo II* blinking power light
Mistery, congrats on the fix!
I have the same problem with my LM004 board, and this will be my first attempt at a circuit board repair. Would you be able to list all the parts you replaced? I'm having trouble tracing the various paths this thread has taken. I'm tempted to just start with the big cap on the board (the only one i can *see* is damaged), then going from there.
Hello to all! I think I'll be keeping this thread alive for the next few weeks until I fix this thing, or destroy it while...Leave a comment:
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Re: New Members - please post your introductions here
Found this forum via Google. I have a Sceptre 19" LCD that died, and replacement parts are hard to come by. It looks like there were a few people here with the exact same issue, so I thought I'd fit right in. This was literally the ONLY site that had any helpful information, and thank goodness there's tons of it.
I have 3 years of physics, a BS in Computer Science and an MBA. My favorite class was embedded systems programming--kind of fitting I suppose. Unfortunately, I haven't had much experience with small...Leave a comment:
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