[TechAssist] Re: TA Samsung TC2540S..R415 open..FBT replaced 1 month ago
- From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 30 Dec 2003 15:12:47 -0500
According to the SM the 3amp fuse is a Time lag fuse and the 1.2A is a
regular fuse.
Phillip R Hull STET
phil245@xxxxxxxxxxxxx
FAX 517--569-3075
Professional Technicians only
----- Original Message -----
From: <support@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, December 30, 2003 2:04 PM
Subject: [TechAssist] Re: TA Samsung TC2540S..R415 open..FBT replaced 1
month ago
> Negative...
> I thought of that, but this set says 1.2 amp, fast/blow right on the PCB.
> Plus, if that was the problem, wouldn't it blow right away? Now this set
will work for a few minutes
> before the fuse goes.
> Thanks anyways, guys.
>
> 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: "Doug Keller" <dek@xxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, December 30, 2003 12:29 PM
> Subject: [TechAssist] Re: TA Samsung TC2540S..R415 open..FBT replaced 1
month ago
>
>
> I agree. I had one awhile back that was doing the same thing. They are a
> "slo-blo" or time delay or something, but not a regular fuse. There is
> probably no problem with the set.
>
> Doug Keller
> Wis-Kel Electronics
> 101 Freeland Ave.
> Terra Alta, WV
> USA 26764
> dek@xxxxxxxxxxxxxx
> http://www.tech-assist.org
> "Learn from the mistakes of others, because you
> won't live long enough to make them all yourself"
>
>
>
> Phillip R. Hull wrote:
>
> >Most all of those Samsungs use a Time delay fuse
> >Phillip R Hull STET
> >phil245@xxxxxxxxxxxxx
> >FAX 517--569-3075
> >Professional Technicians only
> >----- Original Message -----
> >From: <support@xxxxxxxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Tuesday, December 30, 2003 12:13 PM
> >Subject: [TechAssist] TA Samsung TC2540S..R415 open..FBT replaced 1 month
> >ago
> >
> >
> >
> >
> >>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.
> >>
> >>
> >>
> >>
>
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