[TechAssist] Re: Mitsubishi CK3526R
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 28 Aug 2003 08:37:00 -0400
CHECK FOR A SHORTED OR LEAKY D7X1 (3V ZENER).LOCATED ON THE CONTROL PCB.
PT#264P501050. 2. CHECK CONNECTOR PC PIN 1 (ON PCB PWR/DBF) FOR 15 V STANDBY
SUPPLY IF MISSING CHECK FOR OPEN R9A4 220 K OHM 1/4 W.
1. R956 MAY HAVE OPENED CAUSING CURRENT LIMITER Q906 BIAS TO BE INCORRECT.
LOCATED ON PCB-DEF AT EMITTER OF Q906. (100K 1/2W) 2. CHECK TRANSFORMER T552
FOR POOR CONNECTIONS OR OPEN WINDING. LOCATED ON PCB-DEF IN PCC CIRCUIT. PT#
349P145030 3. CHECK C940 (100UFD 16V) BETWEEN B & E OF Q906 IN THE CURRENT
LIMITER CIRCUIT ON THE DEFL PCB, IF BAD RELPACE C940 WITH A 22 UFD 16 V
(NP). 4. CHECK C5H9 BETWEEN B & E OF Q5H4 (10 UFD 50V) IN THE X-PRO CKT ON
THE DEFL PCB. 5. SHUT DOWN CAUSED BY EXCESSIVE REGULATED 130 V SUPPLY, CHECK
C914 (470 UFD 50V) AND C916 (10 UFD 100V), ON THE DEFL PCB.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "markbrock" <markbrock@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 28, 2003 8:22 AM
Subject: [TechAssist] Mitsubishi CK3526R
> hi voltage builds up, green light on for 10 seconds, then shuts down,
> replaced the caps in the power supply, also replaced R956, C940, C5h9,
> C914, C916, and a few others that were questionable, resoldered T552 and
> checked its coils to find them good, not sure about IC 901, ( reg ) have
> it ordered, Q5h3 and 5h4 both ohm ok, HOT is ok, a little hard to
check
> things because of the shut down, no print, not sure where to check
what,
> anyone been there on this one, appreciate it
> brock
>
>
>
****************************************************************************
*
> Classifieds! Buy or Sell!
> http://sell.tech-assist.org
> The Tech Address Book:
> http://www.tech-assist.org/secure/tip/contact.htm
> Add a Repair Tip Here, or Change/Remove your Email Address:
> http://www.tech-assist.org/secure/tip/main.htm
> Lost Password:
> http://www.tech-assist.org and select "Lost your Login Info?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
*****************************************************************************
Classifieds! Buy or Sell!
http://sell.tech-assist.org
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.htm
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
