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Service manuals & datasheets => LCD TV forum => Topic started by: Turnip on October 22, 2011,13:24:15

Title: Inverters - general
Post by: Turnip on October 22, 2011,13:24:15

Hi knowing folks,

Note that most inverters have inputs for brilliance and on-off, are there general voltages to check on these inputs - ignorance is yet us - Chris.

PS - Only entered this as have a Technosonic LCD3201S, using Inverter  – CMO I320B1-16A where 24 supply is Ok, all fuses are Ok, set has sound, 'LCD on' is 3.5v, but still no backlight - wondering why no pic  ?

Title: Re: Inverters - general
Post by: watteau on October 25, 2011,06:50:52

Hi,
Inverter transformers are quite common, shutting down the switching IC.
Could compares readings for like transformers on board for any obvious resistance
variations.
Regards,
John.

Title: Re: Inverters - general
Post by: Turnip on October 27, 2011,12:49:12

Hi John, and many thanks,

Darfon trannie swapping man meself with the odd LG O/C duff burning secondary under the belt (thanks Hero Tony). Thought was that inverters generally would try start if voltages were appropriate.

Replacent inverter in question, supplied by a good Quuq source, perhaps need another for fresh try - Chris

Title: Re: Inverters - general
Post by: SPRATTIEB on November 17, 2011,19:09:24

ever try using external 24 volt supply to power them up that may help you to see lamp BRIGHTNESS level

     SPRATTIEB