[TechAssist] Re: TA Samsung TC2540S..R415 open..FBT replaced1 month ago
- From: Doug Keller <dek@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 30 Dec 2003 14:37:30 -0500
Mine would play for15-45 minutes then blow for no apprent reason.
Someone on here or techmail one told me about the slo-blo fuses. I must
have went through a dozen fuses trying to figure out what was wrong.
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"
support@xxxxxxxxxxxxxxxxxx wrote:
>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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