[TechAssist] Re: Proscan/ RCA PS35682, CTC170RA slowly clicks several times only
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 24 Aug 2004 17:34:31 -0400
On the signal board at front I found a leaking lytic "C602": a
150mfd@16V is this
C4602???
I replaced it, cleaned the area darkened from the fluid. I jumpered an
open trace underneath. Now it powers up with HV for about 10 seconds, a
loud thump from the speakers, and shuts down. I pulled the HV lead out
of the flyback, capped it, (thus isolating a possible bad HV focus
block). powered it up ,but the same thing happens again, so the block is
not at fault. Now where to go...
Phil Bader
Technotronic Dimensions wrote:
>Not sure if this helps, but the RCA 223011 is the Flyback this uses, and it
>frequently is bad. I hear the Rectifier Diodes in the Secondary go bad and
>can open up the ABL Terminal on top the FBT. While NLA , I hope to have this
>Flyback as a Generic Soon.
>
>
>Steve Hearns
>Technotronic Dimensions, NY [USA]
>WWW.TECHNOTRONIC-DIMENSIONS.COM
>1-877-817-9885 (Voice / Fax Toll Free - US Only)
>E-Mail: Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx
>
>
>----- Original Message -----
>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Tuesday, August 24, 2004 4:34 PM
>Subject: [TechAssist] Proscan/ RCA PS35682, CTC170RA slowly clicks several
>times only
>
>
>35" direct view.
>This uses a HV block along with a fly back. i removed the anode from the
>top of the flyback and covered the hole to discourage arcs. This is a
>test for a bad HV block. Still nothing, just the slow 2-3 clicks when I
>push power on my remote.
>The HOT is good with about +140VDC on collector in stby. It must have 5V
>stby because the remote starts the set. I removed the shielded board to
>the front (TPIP), resoldered it, as well as deflection -power board, tho
>all looked OK. On the old CTC169's the audio board would stop the set
>if any output ICs short. Is there a certain plug I can remove to isolate
>the audio power board without major surgery?
>
> Any histories on this? It's a buggar to access the top of any board.
>Phil Bader
>
>
>
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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