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Equipment Repairs => LCD TV forum => Topic started by: EARLYBIRD on December 02, 2010,10:18:07

Title: Toshiba 26AV505DB TRANSISTOR
Post by: EARLYBIRD on December 02, 2010,10:18:07

Hi.We have a Toshiba 26AV505DB ,The drive to the 24 volt line disapears after 10 mins,if we freeze Q201 on the power inverter board it cures the fault for a short while but we cannot read the numbers on the transistor has anyone a circuit diagram or know what the numbers are on the transistors .Thanks

Title: Re: Toshiba 26AV505DB TRANSISTOR
Post by: Turnip on December 02, 2010,11:30:13

Hi E/B,

Don't yet have it listed - guess folks would love a piccy, and some panel details - is it Tosh or Vestel  ?   - Chris.

Title: Re: Toshiba 26AV505DB TRANSISTOR
Post by: EARLYBIRD on December 14, 2010,10:22:23

Hi.The numbers on the power supply are FSB132-4F02 The part in question is Q201 someone suggested BC337 this works for a short while then cuts out  :c017:

Title: Re: Toshiba 26AV505DB TRANSISTOR
Post by: EARLYBIRD on December 16, 2010,07:08:24

Hello.We have managed to find the part number on the web its a KSP2222A .It gives a fault like the inverter transformer is faulty ,just in case anyone else gets the problem.Thanks all for looking. :c017:

Title: Re: Toshiba 26AV505DB TRANSISTOR
Post by: Turnip on December 16, 2010,12:41:46

Hi E/B,

But did it do the biz, and if so -  why ?  - just a thought (love them nifty BC337's) - Chris

Title: Re: Toshiba 26AV505DB TRANSISTOR
Post by: EARLYBIRD on December 17, 2010,15:02:48

Yes the tv is back to normal we fitted a KSP2222 bought on ebay,These tvs look like a supermarket special iam sure we will be getting more in for repair.

Title: Re: Toshiba 26AV505DB TRANSISTOR
Post by: Turnip on December 18, 2010,11:30:12

Hi,

Would have killed for piccies, will prob have 6 in next week and be forced to think after I've phutted all my Sendz Components 70s surplus bulk-pak BC337s -

Well there's still all those cheap 2N3055s - sure they'll take it, but slowly - Chris.