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Hitachi TV power problem

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Mike C

Jan 1, 1970
0
Folks,

Can anybody point me in the right direction?

My daughter has a Hitachi model C1719T TV receiver with a problem. Nothing
appears on the screen - it remains completely black. I don't know if this
screen has a cold cathode (do you get such TV tubes?), but I can't see any
heater coming on, and I can't find any voltage around the tube base. It
generates UHT, however, because I hear it whistle momentarily when the power
is switched off.

Although I have fixed my own TV several years ago (thanks to a guy called
Sam who was a regular contributor to the group!), I don't know much outside
of the theory of TV's, and when I look at the board, I don't know enough to
recognise where the various circuit elements are - and I don't have a
schematic for it.

With the back of the board towards me and the components on the top, the
mains cable comes in on the left side, but I can't even find the rectifier.
Is it a 4-pin chip, or does it use discrete diodes? Is it near to the mains
cable and the fuse? It would make sense!

Any pointers will be appreciated.

Thanks,

Mike.

--
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Mental decryption required:
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C

Chris

Jan 1, 1970
0
Mike said:
Folks,

Can anybody point me in the right direction?

My daughter has a Hitachi model C1719T TV receiver with a problem.
Any pointers will be appreciated.

Thanks,

Mike.

Hi, Mike. Try posting at sci.electronics.repair. They might be able
to give you a few pointers there.

Chris
 
T

Tom MacIntyre

Jan 1, 1970
0
Folks,

Can anybody point me in the right direction?

My daughter has a Hitachi model C1719T TV receiver with a problem. Nothing
appears on the screen - it remains completely black. I don't know if this
screen has a cold cathode (do you get such TV tubes?), but I can't see any
heater coming on, and I can't find any voltage around the tube base. It
generates UHT, however, because I hear it whistle momentarily when the power
is switched off.

Is there any sound?

Tom
 
M

Mike C

Jan 1, 1970
0
Tom MacIntyre said:
Is there any sound?

Tom
Thanks for the reply, Tom,

No, there is no sound. Basically, it no longer has much to offer in the way
of entertainment! :)

Regards,

Mike.
 
T

Tom MacIntyre

Jan 1, 1970
0
Thanks for the reply, Tom,

No, there is no sound. Basically, it no longer has much to offer in the way
of entertainment! :)

Regards,

Mike.

Then it is likely power supply/horizontal deflection.

Tom
 
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