Toshiba CRT - advice please

Roxysiren · 07-11-2008, 21:00

I have a four year old Toshiba CRT model 21S23B2 which now seems to have a problem.

There are a number of fine white horizontal tines along top 2-3 inches of the screen. The last line is a thicker broken line. It started with only about an inch but has gradually grown. They are visible all the time, on every channel and on any recording. Sometimes the lines seem finer than others.

Could anyone advise me if this is a fault which needs repaired by a TV engineer or if it is something that can be adjusted at home. I have searched through the manual but can't find anything relating to this particular problem. Any help would be greatly appreciated.

Thanks in advance.

Nigel Goodwin · 07-11-2008, 22:08

Sounds like flyback lines - this probably isn't going to help you, but it may be failure of the bootstrapping on the frame output stage - could be a capacitor, could be the IC, could even just be a dry joint.

John Currie · 07-11-2008, 23:16

Quote:

Originally Posted by Roxysiren

Could anyone advise me if this is a fault which needs repaired by a TV engineer

Yes, it does.

zaeon · 08-11-2008, 04:30

Quote:

Originally Posted by Nigel Goodwin

Sounds like flyback lines - this probably isn't going to help you, but it may be failure of the bootstrapping on the frame output stage - could be a capacitor, could be the IC, could even just be a dry joint.

Just going by the age of the set, it sounds like a capacitor failing in the field circuitry, time to call in a repair man or consideer going for a new LCD set.

roddydogs · 08-11-2008, 07:15

Get a free one off Freecycle, or nearly free from E-Bay, its not worth repairing a CRT

John Currie · 08-11-2008, 15:43

Quote:

Originally Posted by roddydogs

its not worth repairing a CRT

I think that would be up to the OP to decide.
If it's a simple dry joint or capacitor it should cost anywhere in the region of £25.00-£45.00.
He could certainly get a set off Freecycle but it may turn out to be a pig in a poke...better the devil you know.

roddydogs · 09-11-2008, 07:56

How can something "Free" be a PIP?

Roxysiren · 09-11-2008, 15:24

Thank you everyone for your responses so far!

Good and bad news I think...............................

The good is that as the TV is covered by a 5 year guarantee so any repair should be done at no cost to myself thanks to good old John Lewis.

The bad is that if the TV is away for repair and we substitute it with the newer LCD from the bedroom then when it returns it will look like a big old monster compared to the one we will have been watching in it's absence!!

I will call JL tomorrow.

Thanks again

John Currie · 09-11-2008, 16:15

Quote:

Originally Posted by Roxysiren

the TV is covered by a 5 year guarantee so any repair should be done at no cost to myself thanks to good old John Lewis.

Didn't you know this before posting your plea for help?

Roxysiren · 09-11-2008, 18:02

Quote:

Originally Posted by John Currie

Didn't you know this before posting your plea for help?

Of course I did, but as I stated in my original post I was trying to determine if it sounded like a major fault requiring repair by a TV engineer or if it is something that could be adjusted by the owner.

I wouldn't want to waste an engineers time on something which could have been sorted by a simple adjustment at home but thanks to the advice given here I now know that is not the case.

roddydogs · 10-11-2008, 07:32

Doh...........................................

zaeon · 10-11-2008, 19:12

Pity it wasn't the CRT that was up-the-duff! If memory serves me correctly John Lewis have a New-for-old clause in their extended warranties. You could have ended up with a spanking NEW LCD jobbie if you complained loudly enough!

07-11-2008, 21:00	#1
Roxysiren Forum Member Join Date: May 2006 Posts: 440	Toshiba CRT - advice please I have a four year old Toshiba CRT model 21S23B2 which now seems to have a problem. There are a number of fine white horizontal tines along top 2-3 inches of the screen. The last line is a thicker broken line. It started with only about an inch but has gradually grown. They are visible all the time, on every channel and on any recording. Sometimes the lines seem finer than others. Could anyone advise me if this is a fault which needs repaired by a TV engineer or if it is something that can be adjusted at home. I have searched through the manual but can't find anything relating to this particular problem. Any help would be greatly appreciated. Thanks in advance.

07-11-2008, 22:08	#2
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	Sounds like flyback lines - this probably isn't going to help you, but it may be failure of the bootstrapping on the frame output stage - could be a capacitor, could be the IC, could even just be a dry joint.

07-11-2008, 23:16	#3
John Currie Forum Member Join Date: Dec 2002 Location: South Lanarkshire. Scotland Posts: 2,005	Quote: Originally Posted by Roxysiren Could anyone advise me if this is a fault which needs repaired by a TV engineer Yes, it does.

08-11-2008, 04:30	#4
zaeon Forum Member Join Date: Jul 2008 Location: County Durham Posts: 311	Quote: Originally Posted by Nigel Goodwin Sounds like flyback lines - this probably isn't going to help you, but it may be failure of the bootstrapping on the frame output stage - could be a capacitor, could be the IC, could even just be a dry joint. Just going by the age of the set, it sounds like a capacitor failing in the field circuitry, time to call in a repair man or consideer going for a new LCD set.

08-11-2008, 07:15	#5
roddydogs Forum Member Join Date: Apr 2007 Posts: 6,352	Get a free one off Freecycle, or nearly free from E-Bay, its not worth repairing a CRT

08-11-2008, 15:43	#6
John Currie Forum Member Join Date: Dec 2002 Location: South Lanarkshire. Scotland Posts: 2,005	Quote: Originally Posted by roddydogs its not worth repairing a CRT I think that would be up to the OP to decide. If it's a simple dry joint or capacitor it should cost anywhere in the region of £25.00-£45.00. He could certainly get a set off Freecycle but it may turn out to be a pig in a poke...better the devil you know.

09-11-2008, 07:56	#7
roddydogs Forum Member Join Date: Apr 2007 Posts: 6,352	How can something "Free" be a PIP?

09-11-2008, 15:24	#8
Roxysiren Forum Member Join Date: May 2006 Posts: 440	Thank you everyone for your responses so far! Good and bad news I think............................... The good is that as the TV is covered by a 5 year guarantee so any repair should be done at no cost to myself thanks to good old John Lewis. The bad is that if the TV is away for repair and we substitute it with the newer LCD from the bedroom then when it returns it will look like a big old monster compared to the one we will have been watching in it's absence!! I will call JL tomorrow. Thanks again

09-11-2008, 16:15	#9
John Currie Forum Member Join Date: Dec 2002 Location: South Lanarkshire. Scotland Posts: 2,005	Quote: Originally Posted by Roxysiren the TV is covered by a 5 year guarantee so any repair should be done at no cost to myself thanks to good old John Lewis. Didn't you know this before posting your plea for help?

09-11-2008, 18:02	#10
Roxysiren Forum Member Join Date: May 2006 Posts: 440	Quote: Originally Posted by John Currie Didn't you know this before posting your plea for help? Of course I did, but as I stated in my original post I was trying to determine if it sounded like a major fault requiring repair by a TV engineer or if it is something that could be adjusted by the owner. I wouldn't want to waste an engineers time on something which could have been sorted by a simple adjustment at home but thanks to the advice given here I now know that is not the case.

10-11-2008, 07:32	#11
roddydogs Forum Member Join Date: Apr 2007 Posts: 6,352	Doh...........................................

10-11-2008, 19:12	#12
zaeon Forum Member Join Date: Jul 2008 Location: County Durham Posts: 311	Pity it wasn't the CRT that was up-the-duff! If memory serves me correctly John Lewis have a New-for-old clause in their extended warranties. You could have ended up with a spanking NEW LCD jobbie if you complained loudly enough!

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Toshiba CRT - advice please