[TechAssist] TA Samsung TC2540S..R415 open..FBT replaced 1 month ago
- From: <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 30 Dec 2003 12:13:56 -0500
This set is back again.,..
This time the 1.2 amp fuse is open. Customer said it failed when she pressed
the power button. I found an
intermittent trace from R415. Now set will stay on for a few minutes, then the
fuse opens.
I suspect the FBT which I got from ASTI, but I would think the HOT would go
also.
I have no schematic, but I checked every thing I could find in the HV
section..resistors, diodes, etc.,
but can find no problems. I have tried to troubleshoot this thing, but I keep
going through fuses to
quick.
Should I order another FBT?
Thank you.
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: <support@xxxxxxxxxxxxxxxxxx>
I repaired this set exactly one month ago.
Replaced the FBT with a generic from Acme Sales...(Don't say it). Also,
replaced the fuse, HOT and R415.
Got a call today the set was dead again, just clicked on, then clicked off when
pressing power.
Went over this evening to find R415 (.47/1w) open again and burnt. I replaced
it with a .39 ohm and the
set worked. The color bands were burnt on this.
The B+ goes through this resistor.
I felt the resistor after running the set for a while and it didn't get real
hot.
Question, could a faulty flyback cause this or a marginal reg?
Is it possible the lower value I used may increase the longevity of this
component?
Thank you.
*****************************************************************************
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
