Re: Sceptre X9G-Komodo II* blinking power light



Yeah, I came across that thread yesterday. Don't think the guy ever figured it out. A few suggestions were given for places that can wind transformers to spec. Problem here is we don't know the exact specs.

This place manufactures many that look similar to the ones on these boards, not that you can buy one from them. They supply to MFGR's in massive quantities. The 4th one in on the top row of the picture for CCFL inverter transformers looks suspiciously familiar and has the same number of windings.
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Re: Sceptre X9G-Komodo II* blinking power light

The only numbers printed on my inverter transformers (assuming you mean T1 and T2) are:

2600059016
JER 0529

and

2600059016
JER 0520

Re: Sceptre X9G-Komodo II* blinking power light

And I promise this is my last set of measurements for the night. Here are my resistance measurements across transistors Q6, Q7 and Q11, Q12. Diagrams are looking down at the transistors on the board as in my earlier picture....

Re: Sceptre X9G-Komodo II* blinking power light

Ignore IMG_3677 in my previous post and use this instead. I rechecked the board and all measurements across T2 (good component) measure at least 1 Megaohm, not 21kOhm as my earlier table indicated. New table shown below. Note the very last value should read 307 ohms, not 307 kOhms.

Also I measure 648 Ohms across D1 and 20.7 kOhms across D4.

I also see differences in resistance measurements across my transistors. Se my post below for values....

Re: Sceptre X9G-Komodo II* blinking power light

Couldn't edit my post above to add the pics, so here they are. IGNORE the third pic (the values) in this post, and see my next post instead. I measured on both T1 and T2 (T1 is the one running hot). I arbitrarily labeled the pins A through H similarly for both components as seen when looking at the bottom of the board. There seems to be some drastic differences when measuring from any of the pins in the row of A through E across to G or H. Much higher resistances on the properly working transformer (T2). Could these be due to faulty...

Re: Sceptre X9G-Komodo II* blinking power light

Wow, wasn't expecting as many replies so quick! Thanks.

I can get some pictures of my board tonight. In the meantime my board is the exact same as shown in Hennegan's post on 01-22-2011, 06:50 PM (same board part number and rev). All of the components look identical also. well, they did until I replaced the caps with new ones.

alexanna, "by 2 seconds to black" what are you suggesting/asking? My monitor is not going black any longer now that I've replaced all the caps, but T1 is getting much hotter...

Re: Sceptre X9G-Komodo II* blinking power light

I know months have gone by since the last post in this thread, but my slightly different issue with the same board could potentially help someone in the future (if I can get it fixed).

Like others, my monitor was turning on, then going black after 1-2 seconds. I found a cracked C10 film resistor and some board discoloration (from excessive heat) near T1. I replaced ALL of the electrolytic caps with Panasonic FM series and also the two film caps (C10 and C21). Now my monitor stays on, however I may still have a problem....