[TechAssist] Re: GE PTV Model# 46GW940 Chassis#PTK169PVA no standby voltage

  • From: "OrpheusComputing.com Repair" <techassist@xxxxxxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 30 Nov 2001 02:16:46 -0600

Max here is some text I keep for the most common component
failure in these sets with those problems.  Some you may not
have checked (some you already have).
Replace CR4118, C4108, CR4402, C4402 & C4401
even if they check good.  Also check CR4101, CR4606,
CR4111, C4105, Q4101, CR4122, CR4123, R4150, R1928,
R4114, C4705, C4115, CR4709, C4145, C414, CR3101,
R4150, C4141, SCR501, CR4504, C4503, R3126, CR4303,
CR4710, C4145, Q4105, R4102, C3124, R4704, R4713,
Q3102, R4904, U4101, the yoke, pin of 12-13 of T4102
could be open, resolder L4803 & T4401, and possibly
L4702, U4801, U1902, Q4302 check for shorts (pin 1-3) in
U1901 If you are getting ~15v from the PS, IC3101 & Q4601
could be bad.  If it's down below 15v, replace C4145.  Could
also be HV distribution block.
-Clint

God Bless Us All
Clint Hamilton, Owner
http://OrpheusComputing.com
http://ComputerHardware-ConsumerElectronics.com
sales@xxxxxxxxxxxxxxxxxxxx
Fax: 209-882-9602
TechAssist Administration
http://tech-assist.org
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----- Original Message -----
From: "Maxwell Bailes Jr." <bailes4@xxxxxxxxx>
To: "techassit" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, November 29, 2001 10:35 PM
Subject: [TechAssist] GE PTV Model# 46GW940 Chassis#PTK169PVA
no standby voltage



Hello,
This PTV was going into shutdown,after about 10
miutes. I've changed R4110,Q4802,
CR4402,CR4401,CR4118,C4402,C4401,
C4104,C4102,C4145,U4101. I have 157V raw b+, 144 reg.
b+,no standby voltage at all. Q4101 checks good. I
lost standby voltage when I installed the wrong value
cap. in c4401. install a .0128 1600V instead of .0162
1600V then Q4802 shorted all ways,Q4401 shorted all
ways,CR4401 shorted. What I'm I missing? Any ideas?
TIA
Max

=====
Max Bailes
Bailes Electronics
Rt.4 Box57-A
Hurricane,WV. 25526
304-562-7167




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