ilikesteel found this great unit on the web, it will good for testing the lamps (4), can't beat the price. Cost less than one replacement transformer.
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Inverter module thanks to ilikesteel
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Inverter module thanks to ilikesteel
Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Tags: None
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Re: Inverter module thanks to ilikesteel
I was actually thinking of buying an inverter like that for a Philips 190S5 19" LCD monitor that I found recently. Except I was thinking of buying one off of ebay (the Chinese ones on ebay are similarly priced and don't look that bad either). What you posted is probably better, though.
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Re: Inverter module thanks to ilikesteel
They have more on EBAY:
http://www.ebay.com/sch/i.html?_nkw=...RTER&_osacat=0Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Inverter module thanks to ilikesteel
Do these inverters work with just one bulb, or do all four need to be plugged in?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Inverter module thanks to ilikesteel
All four lamps have to be good, it uses the same detection to know if the lamps will fire up and stay lit or not. This will just help you narrow down the problem to find out if you have bad lamps or bad inverter board. When I have bad lamps, I will inspect all the lamps any way.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Inverter module thanks to ilikesteel
Originally posted by tom66 View PostDo these inverters work with just one bulb, or do all four need to be plugged in?
Looking at close-up pictures at most of these inverters, they seem to be using a push-pull design rather than the old Royer oscillator - and that's good in a way. At least from my observation, push-pull designs are a lot more robust. However, one potential problem they have is that multi-lamp inverters usually drive all CCFLs at once and if one CCFL is bad, the whole inverter shuts down and you cannot disable parts of the inverter to let the other CCFLs run. With Royer oscillator, the most common config is 2 CCFLs/inverter transformer. In a 4-lamp inverter, you can sometimes disable half of the inverter and just use the other half. That's what I did with my Dell E193FPc after it blew the new replacement transistors for the lower inverter despite the transformer joints being good.
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Re: Inverter module thanks to ilikesteel
No body that I know of uses the Royer Oscillator setup any more in their design due to the newer PWM IC, the Oscillator is done inside the IC instead of depending on the Tuned circuits of the output stage with big high voltage tuning caps.
It is also corrrect that you cannot disable one set of the lamp with this new design as momaka indicated, I did the same on those BenQ designed used in HP and Dell to run just two lamps.
Funny thing is that I see some of these 22" wide screen Dell and HP are using only TWO lamps! to keep the price down.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: Inverter module thanks to ilikesteel
I know, it's cheaper than a replacement transformer! and free shipping!Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Inverter module thanks to ilikesteel
Originally posted by jetadm123 View PostCan't believe the price of these inverters on eBay.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: Inverter module thanks to ilikesteel
Originally posted by jetadm123 View PostMan, if I had a bad ccfl controller chip or inverter transformer I couldn't source, I'd probably try and fit one of these boards into the circuit.
I think we are slowly falling into slavery to the cheap Chinese electronics. The point where it's cheaper to replace the whole thing than it is to fix it on the component level is nearing.
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