[TechAssist] Re: RCA G35300WK CTC169BA Blowing Pincushion
- From: "R Herring" <supertek66@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 6 Dec 2001 20:29:27 -0600
Hey group,
this dog is a pain. I changed C4705 now read normal +26v at U4801 pin 10
with horizontal yoke disconnected all is well, vertical waveforms are normal
at TP45 (vert yoke), horizontal waveforms are normal at Q4401 base. All run
voltages are within tolerance. When turn off connect hor yoke and power up
CR4401 pops.
Besides parts listed in previous post have also replaced CR4805, Q4804,
C4801, CR4806, C4705
Has anyone seen this or have a good idea what else to look for?
I'm out of patience and so is my customer.
TIA
Robert
H&H Electronics Inc
supertek66@xxxxxxxxxxx
robert_herring@xxxxxxxx
----- Original Message -----
From: "R Herring" <supertek66@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, November 29, 2001 10:48 PM
Subject: [TechAssist] RCA G35300WK CTC169BA Blowing Pincushion
> HELP !
> this dog is really bite'n me
> I repaired power supply usual C4102,C4105,C4108,CR4118,C4143,C4145.
> When powered up R4719 at C-Q4705 on/off switch smoked and found Q4702,and
CR4401 damper shorted,
> so replaced those and C4401,C4402,CR4402.
> Now U4801, Q4802, CR4401 blows their top when powered up if yoke
connected.
> Standby volts +153, +7.4, +13.5,+17 and -17
> Will come on and run if leave horizontal yoke disconnected.
> Run voltage +143.3 others ok except +26v off T4401 pin 10 reads +36v
> now needs U4801,Q4802,CR4401,CR4805,Q4804
> Have tried subbing different crt/yoke with same results.
> Please anyone that may have seen this or have idea my ears are open.
> TIA
> Robert
> H&H Electronics Inc
> supertek66@xxxxxxxxxxx
> robert_herring@xxxxxxxx
>
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