[TechAssist] Re: KV-27FS13 Sony (flashes 4 times)
- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 16 Aug 2004 22:55:04 -0400
From Tech Repair CD:
Sony\KV27FS13\Dead / Standby light flashes 4x\135v line pulses between 0v - 30v
several times* then unit
shuts down. Power on to recycle\\\D501 is leaky. Measures 80 ohms in both
directions\\\\\\\\
Sony\KV27FS13\Dead set standby light flashing\\\BA5\Found diode D616 on the
A-Board open\\\\\\\\
Sony\KV27FS13\Immediate shutdown at power up* 4 blinks of LED\\\\Disconnected
200v line to CRT board and
still shuts down. Horizontal Output checks good* 135v good* IC-502/pin 2
0v.\Unsoldered IC502 and still
shutdown and no +/- 13v* no HV rush at power up* no HD/VD drive at first power
up. Low B from D616 does
not come up at all\Found a transistor in place of D616 that was open* replaced
w/correct diode and unit
powered up and operated normally.\The transistor that was in place of D616 was
a 2SC4370 and did have
original solder indicating this came from factory this way. Transistor checked
open\Replaced D616
w/originally listed part number (871951037) and unit operated normally. Located
off of T603/pin 14 of the
power supply\\\\
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952
www.intrepid-video.com www.tech-repair.net
Kenny Barnes wrote:
> Also,(add on to last request) after flashing 4 times and shutting down,
> set continues to flash 4 times.
>
>
>
>>Date: Mon, 16 Aug 2004 15:11:34 -0500
>>To: techassist@xxxxxxxxxxxxx
>>From: Kenny Barnes <kennyb@xxxxxxxxxxxx>
>>Subject: KV-27FS13 Sony
>>
>>
>>KV17FS13 Sony,second
>>request
>>
>>Pulses 4 times. No high voltage,HOT OK.Found D513 and D514 shorted and
>>R549 open. Replaced above with Sony parts,also changed vertical IC 502,
>>D616, and D620. Both shorted. Please advise.
>
>
> Kenny Barnes
> Kenny Barnes tv
> 928 South Marshall st.
> 5154325250
> Boone, Iowa 50036
>
>
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