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Vrya
Joined: 03 Feb 2008
Posts: 4
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 Posted: Mon Jun 22, 2009 12:44 pm Post subject: Need Service Manual for Toshiba TV 2540XH-Dramatic-V21 |
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Hiii... Alll
Help with my problem.... 
1. Toshiba TV 2540XH have a Bright White line across diagonal/horizontal of the screen.( Sympthon likes Vertical problem ? )....but I can see if the picture was folded to the middle of the screen.
2. Can I have the full service manual for this type of tv ?
Hope hear from you soon.
Regards,
Vrya
[email protected] |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Mon Jun 22, 2009 1:01 pm Post subject: |
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| Replacing the vertical IC and pump up cap should fix it. |
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Vrya
Joined: 03 Feb 2008
Posts: 4
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| Posted: Tue Jun 23, 2009 11:05 pm Post subject: |
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| minnie wrote: | | Replacing the vertical IC and pump up cap should fix it. |
Dear Minnie...
Many Thank's for your solution,it's LA7837 (IC301) as the vertical IC ?!
Thank's
[email protected] |
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Vrya
Joined: 03 Feb 2008
Posts: 4
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| Posted: Tue Jun 23, 2009 11:21 pm Post subject: |
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| Vrya wrote: | | minnie wrote: | | Replacing the vertical IC and pump up cap should fix it. |
Dear Minnie...
Many Thank's for your solution,it's LA7837 (IC301) as the vertical IC ?!
I could saw if at Q408 is attached AN7712F ?! it's a mistake or some modification ?
Some useful info :
Toshiba TV type : 2540XH
FTB : TFB4118AN
Tube : A59KPR84X
IC301 : LA7837
IC501 : TA8880AN
IC502 : TA8772AN
IC602 : TA8211AH
QD01 : B688
Q408 : AN7712F
Q404 : D2253
I have another question :
1.How to identification the chassis number ?
2.Where I can get the schematic for replacing the Q408 ?
Thank's
[email protected] | |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Wed Jun 24, 2009 2:18 am Post subject: |
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| Check with Justmanuals. I don't have access for non american sets. |
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Guest
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| Posted: Wed Jun 24, 2009 9:18 pm Post subject: |
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| minnie wrote: | | Check with Justmanuals. I don't have access for non american sets. |
Hii minnie
Thank's for your answer....I think I'll try to serch..
Thank's again.
for additional info...
I had changed the IC301( LA7837 ) and olso the elco around the IC....nothing change on the screen 
what I had missed ??? I resoldered the pins of TFB,Coils....
There is a DPC board ? what have potentio for Hwidth,DPC,HHeight.The QD01(B688),getting hot just i minute i start the set.
What's that function of dpc or gpc board ??
Thank's
Vrya |
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Justmanuals
Joined: 21 Aug 2004
Posts: 1948
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Vrya
Joined: 03 Feb 2008
Posts: 4
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| Posted: Sat Jun 27, 2009 3:46 am Post subject: |
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| Anonymous wrote: | | minnie wrote: | | Check with Justmanuals. I don't have access for non american sets. |
Hii minnie
Thank's for your answer....I think I'll try to serch..
Thank's again.
for additional info...
I had changed the IC301( LA7837 ) and olso the elco around the IC....nothing change on the screen
what I had missed ??? I resoldered the pins of TFB,Coils....
There is a DPC board ? what have potentio for Hwidth,DPC,HHeight.The QD01(B688),getting hot just i minute i start the set.
What's that function of dpc or gpc board ??
Thank's
Vrya |
Hii all...
After I replaced the IC301(LA7837) the set is stack in standby.No heater voltage,KB/KR/KG is aroud 171V...the ic 301 no voltage drive at pin1..when i traced it must came from ic AN7712F,it's just 1V at pin input and output of the ic(Q408).I tried to unmount the ic,at input pin have 16V.
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