[TechAssist] Re: SONY KV-27V42 Chassis BA-4D 4 blinks on front

Why do you need a $20,000 scope?




Gary McCartney

McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca








Jim Myers wrote:
> Clip a $2.00 2SD1879 mounted on it's own heat sink into the circuit for 
> test. Monitor the collector with a scope if you have a $20,000.00 or 
> equivalent Sencore. Best to blow up a 2.00 transistor than a 20.00 one.
> 
> 
> ********************************
> Since 1972                     *
> Jim Myers                      *
> Telrad Electronics             *
> Fort Wayne Indiana             *
> ********************************
> 
> 
> Shaun wrote:
> 
>>This set is a scary one the h.o.t. was shorted many suggestions to why but
>>the bad thing is replacement 8-729-043-43 is around $20.00 with shipping I
>>am almost afraid to replace it for fear of it shorting again just my ranting
>>thoughts.
>>
>>Shaun
>>
>>Advanced Electronics
>>224 West Riverview Ave.
>>Fort Morgan, CO 80701
>>----- Original Message ----- 
>>From: "tvservice" <tvservice@xxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Wednesday, July 27, 2005 4:11 PM
>>Subject: [TechAssist] Re: SONY KV-27V42 Chassis BA-4D 4 blinks on front
>>
>>
>>
>>
>>>replace cap C390 (point).47mfd50volt off base of Q501 hor drive transistor
>>>Don't sub the HOT
>>>Robert
>>>tvservice@xxxxxxxxxxxxx
>>>H & H Electronics Inc
>>>
>>>----- Original Message ----- 
>>>From: "Shaun" <satguy@xxxxxxxxxxxxx>
>>>To: "tech" <techassist@xxxxxxxxxxxxx>
>>>Sent: Wednesday, July 27, 2005 11:57 AM
>>>Subject: [TechAssist] SONY KV-27V42 Chassis BA-4D 4 blinks on front
>>>
>>>
>>>
>>>
>>>>This set blinks 4 times when tried to start up. I found the horz. output
>>>>shorted (Q502) I am wondering if there is anything else in this set that
>>>>will cause Q502 to short. I found no loose connections or bad solder.
>>
>>Any
>>
>>
>>>>info would be great. Thank you.
>>>>
>>>>Shaun
>>>>
>>>>Advanced Electronics
>>>>224 West Riverview Ave.
>>>>Fort Morgan, CO 80701
>>>>
>>>
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