| Author |
Message |
benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
|
| Posted: Sun Dec 30, 2007 8:53 am Post subject: off topic - crt tv problem |
|
|
I know...it's not on topic, but I'll bet someone can help me out.
I have a brilliant Hitachi FX90 crt tv at my disposal, this was a very nice set and still is for that matter. I would love to make it work if it doesn't cost me an arm and a leg.
The set seems to turn on..at least it clicks when I power it on. But there is nothing going to the screen.
I checked the fuse, and that's not the issue....I'm guessing Horizontal Output Transformer?
Anyone have any other thoughts or troubleshooting methods that I could try?
Ben
|
|
| Back to top |
|
 |
AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
|
| Posted: Sun Dec 30, 2007 8:55 am Post subject: |
|
|
Do you hear the HV 'buzz' when you turn it on?
_________________
Tech support for nothing
CRT.
HD done right!
|
|
| Back to top |
|
|
r.bauer
Joined: 08 Apr 2006
Posts: 280
Location: The Netherlands
|
| Posted: Sun Dec 30, 2007 12:38 pm Post subject: |
|
|
| AnalogRocks wrote: | | Do you hear the HV 'buzz' when you turn it on? |
Probably not.
Almost all circuits in a CRT tv are related and share the same power lines. The horizontal output transistor powers the horizontal deflection, it powers the High-voltage circuit and sometimes generates the power for other circuits as well.
It is very common for this transistor (FET) or the power-FET in the SMPS to fail. Or the line-transformer(inlcluding cascade).
Find a servicemanual and start measuring.
|
|
| Back to top |
|
|
benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
|
| Posted: Mon Dec 31, 2007 5:42 pm Post subject: |
|
|
|
will do! Thanks for the tips...and no, I don't hear anything on power on...it's silent.
|
|
| Back to top |
|
|
|
|
