[TechAssist] Re: Hansol 710A, E17CL, computer monitor, clicking noise from flyback

  • From: Kevin <kevintv@xxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 07 Jul 2004 12:16:19 -0700

FQB-17A002.  I used a Sencore LC75.

Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx 
 

-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Technotronic
Dimensions
Sent: Wednesday, July 07, 2004 7:09 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Hansol 710A, E17CL, computer monitor, clicking
noise from flyback

Sounds very low. Its suppose to be 4-9 nF For Computer Monitor Flybacks.
Sometimes the Anode Leed Length will cause inaccurate readings
though....but
that tends to raise the Actual value, not lower it.  What Test equipment
did
you use? Also, whats the Numbers on the Flyback?


Steve Hearns
Technotronic Dimensions, NY [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM
1-877-817-9885 (Voice / Fax Toll Free - US Only)

----- Original Message ----- 
From: "Kevin" <kevintv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, July 07, 2004 4:58 AM
Subject: [TechAssist] Re: Hansol 710A, E17CL, computer monitor, clicking
noise from flyback


The internal capacitor measures 150 pF from anode to ground.  Is this
normal?

I am still not sure that it is the flyback with the other repair that I
am doing.  Thanks.

Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx


-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Technotronic
Dimensions
Sent: Monday, July 05, 2004 4:45 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Hansol 710A, E17CL, computer monitor, clicking
noise from flyback

Sounds like a bad Internal cap in the FBT From anode to Gnd. If you have
a
Sencore, you can check it. Sounds like its open.

What is the Number on the Flyback? Then I can tell you if it perhaps a
Well
documented Number that has Failed often, to support the suspicion.


PS: Do you still need the CF1147 FBT for the other Repair you were
doing?


Steve Hearns
Technotronic Dimensions, NY [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM
1-877-817-9885 (Voice / Fax Toll Free - US Only)


----- Original Message ----- 
From: "Kevin" <kevintv@xxxxxxx>
To: "TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Monday, July 05, 2004 6:29 PM
Subject: [TechAssist] Hansol 710A, E17CL, computer monitor, clicking
noise
from flyback


This 17" monitor has a problem I have not seen before.  When the monitor
is turned on the flyback makes a funny clicking or pulsing noise.  The
noise lasts for 5 seconds and then goes away when a relay clicks on (or
off, not sure which) for 5 more seconds.  This process is repeated over
and over again.  I have checked for obvious shorts, bad connections and
the flyback ring test is good.  I also disconnected the CRT PCB with no
change.  The horizontal part of the yoke rings good as well.  Anybody
seen a similar problem?  I am suspecting that it is the flyback even
though it tests good.  TIA

Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx




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