[TechAssist] Re: Toshiba 42H81 blowing fuse**FIXED**
- From: "Valley TV" <valleytv@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 09 Aug 2003 07:40:47 -0500
Thanks to all who emailed me privately and on techassist! Fix was a bad solder
connection on the black wire that feeds the +16v to the convergence ic's on the
main board. Rule #1> ALWAYS use a good light when repairing in the house!! I
broke the rule and paid with 2 return trips....
Gary
Valley TV
Drums, PA office
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Valley TV
> Sent: Thursday, August 07, 2003 4:07 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Toshiba 42H81 blowing fuse
>
>
> Hi everybody!
> Hope someone has encountered a disaster that I have with a Toshiba 42H81
> blowing a 5A fuse.
> Sent to a home outside of Philadelphia with the complaint "red light blinks
> only". Found F850, F851 (5amp fuses), F470 (2A) and F890 (3.15A) all blown.
> Carefully checked for ANY defective parts and found NONE (quite a surprise
> when 4 fuses blow). I replaced all 4 fuses and held my breath.. TV
> immediately came on with a great picture which really was a surprise! Since
> there have been so many electrical storms around I was hopeful.. 2 days
> later customer called and said "red light blinks only". I expected to find
> all the fuses blown again but only F850 (+16V) had blown. When I replaced
> it the set immediately came on but I "knew" there was no way it was only a
> bad fuse. I pushed the service manual cd in my laptop and found that F850
> and F851 both fed the 2 convergence IC's. I replaced both and really did
> not expect to hear from the customer again. Surprise..2 more days and "red
> light blinks only". I'm planning on driving back tomorrow but I would
> appreciate anyone's th
> oughts on this. Set cannot be removed from home in this case so I will
> certainly have to figure it out there.. I have had some new bad
> STK392-110's in the past but it seems unlikely but any ideas are helpful!
>
> Gary
> Valley TV
> Drums, Pa office
> valleytv@xxxxxxx
>
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