[TechAssist] Re: Mitsubisi ck3526B
- From: Jeff Dougherty <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 29 Aug 2003 18:23:25 -0400
Brock,
>From Tech Repair CD:
Mitsubishi\CK3526R\SHUT DOWN AT POWER\\\\R956 MAY HAVE OPENED CAUSING CURRENT
LIMITER Q906 BIAS TO BE INCORRECT. LOCATED ON PCB-DEF AT EMITTER OF Q906. (100K
1/2W)\CHECK TRANSFORMER T552 FOR POOR CONNECTIONS/OPEN COIL. LOCATED ON PCB-DEF
IN PCC CIRCUIT. PT#349P145030\CHECK C940 (100UFD 16V) BETWEEN B & E OF Q906 IN
THE CURRENT LIMITER CIRCUIT ON THE DEFL PCB\CHECK C5H9 BETWEEN B & E OF Q5H4
(1µf/50V) IN THE X-PRO CKT ON THE DEFL PCB\SHUT DOWN CAUSED BY EXCESSIVE
REGULATED 130 V SUPPLY-CHECK C914 (470 UFD 50V) AND C916 (10 UFD 100V) ON THE
DEFL PCB.\\\\
--
Jeff
Intrepid Video TV/VCR Repair
263 S Front St
Steelton PA 17113
Fax: 717 564 495 2
www.intrepid-video.com www.tech-repair.net
On Fri, 29 Aug 2003 12:48:12 -0500, markbrock,
markbrock@xxxxxxxxxxxxx wrote:
> can someone help me find D7x1 3volt zener, very busy, no print,
> it builds hv for few seconds then dies, done all the caps etc.
> have the 15volts stand by on pin 1 of connector pc, lots of
> corrosion from bad caps around q906, replaced the caps, transistor
> ohms ok but not sure where to find voltages with no schematic, its
> in hv, shutdown mode, can I bypass this some how to read b+
> also soldered transformer, and replaced all the normal caps that
> cause this, along with r956.
> appreciate any help, advise or even a fax in the area I'm needing
> to troubleshoot
>
> brock
>
>
> Brock Electronics
> R.R.4 box 237
> 5208 cr.3385
> Independence Ks. 67301
> 620-331-0235
> fax 331-7191
>
>
> markbrock@xxxxxxxxxxxxx
> Zenith*Philips*Peavey*Fender*Crate
> we work on all brands,makes,models
> of anything that plugs in the wall
>
>
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