[TechAssist] Re: rca ptv ctc169pca
- From: "Electric Medic" <info@xxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 16 Nov 2003 23:57:01 -0500
I would replace CR4118.
or
Also check these:
C4102 2.2uf 100v
C4104 15uf 63v
C4108 47uf 50v ( Sometimes This Is A 39uf)
or
Here is the standby voltages for the regulator device U4101.
pin 1 0.03V PWM Control
pin 2 0.27V Duty Cycle Control
pin 3 0.06V Current Sense
pin 4,5,12,13 GND
pin 6 2.30V E in
pin 7 2.88V S in
pin 8 0.01V C2
pin 9 1.13V Slow Start
pin 10 2.50V C0
pin 11 10.8V R0
pin 14 0.58V Output
pin 15 10.9V V+
pin 16 10.8V Vcc
or
Try removing the HV lead from the bleeder assy. If it runs and you have
about 30kv coming out of the IHVT, plug
it back in and disconnect all three HV leads to the CRTs. If the bleeder is
ok start rehooking tubes one at a time till the culprit shows up. (Bleeder
might be bad)
or
What is happening at the fault detector input of the CPU? U3100(2). This
should
be at least 3.7 volts. If less than that it will cycle on and off 3 times
or
Unsolder b+ to audio final(S), or just pull audio final(S), if set starts up
then they are shorted. They will cause set to pulse 3 times if they are
shorted.
Perry Bower, (EHEER) Electronic Home Entertainment Equipment Repairer
Electric Medic
"It's Cheaper to Keep Her"
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-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Peter G
Sent: Sunday, November 16, 2003 5:56 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] rca ptv ctc169pca
dead intermittent dead. changed all parts that tested bad in horiz
deflection and power supply. Unit still dead. Need input on this set.
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