Inverter tranaformer question

[CroTech]

I was wondering if I could replace transformer 1400271 C09TM13 C (faulty one secondary 1,1kOhm other 96kOhm) with TMS92903CT (both secondaries at 1,68kOhm) and if not why? Thx in advance.

[budm]

Re: Inverter tranaformer question

The only way to tell if the substitute transformer will work or not, you will need the spec of the old transformer and the new transformer. Do you know what the the output voltage of both transformers are if the primary is applied with the same input voltage, Do you know the impedance of both transformers? Do you know how much current output of both transformers are? The pinouts are the same? Many data you need before doing substitute or you can damage the drive circuits or the lamps will not light up properly.

[CroTech]

Re: Inverter tranaformer question

can u find datasheets for them? I am having problems finding them.

[redwire]

Re: Inverter tranaformer question

The CCFL inverter transformers are custom made for Samsung, so specs would be very hard to find. You have to match the tube size, length (secondary voltage and current) with the inverter drive (primary voltage, bridge/Royer), and pinout too. Google "ccfl 1400271" and you can find them on eBay or from Chinese vendors.

Here are sample specs on CCFL transformers, as you can see there are many parameters to match.

[CroTech]

Re: Inverter tranaformer question

I ordered the same replacements so I dont have to think aboout it, I will have to way for it abaout 6-8 weeks but it is worth it.

[majkstone]

Re: Inverter tranaformer question

Ok I need same raplecement for the transformer 1400271 C09TM25A
This are parameters from the PCB board PWI2304SL
Usec=800V AC @ 7.5mA
I found a replacement signatures TMS92920CT but
no datasheets to check the Secundary Resistance