[TechAssist] Re: Sony KP46v15
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 26 Mar 2004 07:23:04 -0500
Sounds like you have have a bad CRT but see the following:
SYMPTOMS: Cust. complaint of intermittent picture. When first turned on
timer led flashed, but no picture appeared. Troubleshooting revealed no high
voltage being produced.
RESOLUTION: Verified Hor. Drive to N bd. voltage check Q811 collector showed
no 115v through flyback, Tracing back on PC board revealed crack on PC board
beneath L805 & C803 interrupting 115v supply to flyback. Jumper wire across
crack restored high voltage & picture.
-----------------------------
SYMPTOMS: Relay clicks twice. Replaced shorted H. Out.
CAUSE: Found a little star hole under the yoke and was causing to shut down
RESOLUTION: Found problem on N Board, IC-l802 arcing.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "peggs" <peggs@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, March 25, 2004 6:35 PM
Subject: [TechAssist] Sony KP46v15
> Set came in with a complaint of No Power and 'flash' behind the right
speaker
> at Power on.
> I get immediate shutdown at plug-in.I think the Flash is a relay closing
> but not sure.
> Anyway,I disconnected the flyback input to the HV Splitter and the set
fired up
> at plug-in.
> I put the flyback anode back in to test the Picture tubes one at a
time,but
> before
> I disconnected any of the Tube anodes from the HV splitter,I plugged it
back
> up.Set came on momentarily then died.Now I don't even get shutdown,it's
dead.
> Found on the 'N' board Q811 2sd1887 shorted,andQ801 2sd2555 shorted.
> also on the 'G' board found Q603 and Q614,both 2sc4582, shorted and
> R604 .1 ohm open.
> Tritronics has HV Tripler as 1-453-108-11,replaced by -12, $140.94 retail.
>
> Has anyone been down this road,or have some tips on this set.
> It belongs to a good friend
>
> Peggs
> Peggs' Electronics
> 1519 West 2nd Street
> Owensboro,KY 42301
> 270-926-4968
> fax 270-686-7399
> peggs@xxxxxxxxxxxxx
>
>
> --------------------------------------------------------------------------
---
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
