[TechAssist] Re: RCA CTC169 (PS27113) HOT Q4401 Shorts after about 30 seconds.
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 30 Nov 2005 09:02:52 -0600
Replace C4102,C4104 and C4108 to resolve the B+ regulation.
Then check out the blue horizontal frequency resonator Y4301 near the jungle
ic.
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
http://supertek.igniteinc.biz
----- Original Message -----
From: "Dale Lubow" <harristv@xxxxxxxxx>
To: "TechAssist" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 29, 2005 10:05 PM
Subject: [TechAssist] RCA CTC169 (PS27113) HOT Q4401 Shorts after about 30
seconds.
> Unit came in with the HOT Q4401 shorted. I thought I would cover all my
> bases by replacing CR4401, C4401, CR4402, C4402, C4403, CR4118, C4145.
Also
> soldered normal flyback pins, driver transformer pins, Pincushion
> transformer pins and any other questionable connections. Before I applied
B+
> to the deflection circuit I made sure it wasn't running to high. Actually
it
> was running 123 volts in standby which I think is a little low. I even
> measured the HV at 29KV before I connected the CRT. So I hooked everything
> up, pressed the power button and I had sound and picture. It looked like
it
> was running normally but in about 30 seconds it shut down and shorted the
> HOT again. The transistor was even still cold to the touch. Does any one
> have any ideas on what might be going on?
> TIA,
> Dale
>
> --
> Dale A. Lubow CET
> Harris TV & Appliance
> 335 Lincoln Way
> Ames, IA 50010
> 515-232-1109 (Voice)
> 515-232-3356 (Fax)
> HarrisTV@xxxxxxxxx
>
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