[TechAssist] Re: Sony KP51HW40 RA6 chassis dead, more problems
- From: "Shannen's Electronics" <tvshop@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 13 May 2005 15:32:03 -0500
That resistance of 224 sounds normal on that line. Shannen
Shannen's Electronics
Garden City, KS 67846
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Larry E
Sent: Friday, May 13, 2005 2:05 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Sony KP51HW40 RA6 chassis dead, more problems
Hi Guys, Finally got the back ordered IC12 for this Sony KP51HW40, installed
the IC on this miserable double sided pain in the a@@ A board,
then checked output pin to ground and got 12 Ohms, Thanks to Bob
Waterman I knew to pull the "B & AD" boards, when I pulled and checked these
2 the AD was OK but the B boards 5v line reads 12 Ohms to ground, problem
now
is, after removing these two boards from the A board the 5 volt output pin
of IC 12 reads 224 Ohms??? This seems veeery low for a 5v line, can anybody
confirm this is normal? I hate to order and install a $156.00 (retail) B
board only
to find the A board is bad , retail on that one is $631.69 Thanks for any
info you
can give, Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
----- Original Message -----
From: "Larry E" <videotech@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, February 25, 2005 4:06 PM
Subject: [TechAssist] Sony KP51HW40 RA6 chassis dead
> Hi Guys, this KP51HW40 clicks once, pauses 2 seconds and clicks again then
led on front
> flashes 6 times, according to the print this is a dead short on +5v line,
I have 4.98 volts on
> output pin of IC5006 the standby 5 volt IC??? solder on G board is all
good, HOT is not shorted, no burned or stressed looking parts anywhere. If I
remove all connectors from the G board except
> CN5001 (relay) all of the voltages including the 135 B+ come up to full
and then immediately start to decay towards zero. Jumping the second relay
does not start the set, the second relay RY6003
> has no DC across the coil, the primary relay RY6002 has approx. 25 volts
across it which
> according to the print is supposed to be 9 volts? The schematic is very
confusing because the relays are on 2 different pages and they don`t show
the connection between them, has anyone seen this
> chassis before with this problem? I don`t see a lot of Sonys here but I`m
lost even with the print,
> could this be a software error? I don`t understand the 6 blink code saying
"short on 5 volt line"
> Any ideas? tia Larry E
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
>
>
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