[TechAssist] Re: Projo RCA CTC169 Dead with wrong standby voltages
- From: "Ron Miller d.b.a. Country TV" <rlmbkm@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 4 Mar 2005 22:08:01 -0600
Is this a DV or PRJO? You need to provide complete model and chassis
numbers.
Country TV
Ron Miller
Inez, TX. 77968
----- Original Message -----
From: "Warren" <warrenca@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, March 04, 2005 9:47 PM
Subject: [TechAssist] Projo RCA CTC169 Dead with wrong standby voltages
> Hi all!
>
> I will list the work so far:
>
> 15 V standby = 14.2
> 5V standby =4.9V
> Raw B+=151V
> Regulated B+ is too high I think ...The meter does not like the signal
> at TP4101 some times 197V sometimes 1.97V??
> Should the Reg B+ be 143V before turn on????
> From cathode of CR4106 to Cathode of CR4101 first I had 2 Volts.... Now
> after changing diodes I get 3 volts???
> Should be under 1 Volt.
>
> Installed a startup kit from Global Q4101, U4101, C4102, C4118, C4108
> (47uf) which also was a 47UF before.
> My schematic shows 39uf ?? does this make a difference??
> Caps were installed first with Q4101 , IC U4101 was installed
> afterwards.
> Also changed C4104(15uf) with also no change.
> I also tried to isolate the H out (curiosity) - no change
>
> I've read many tips but most of these point to the parts that I've
> already changed.
> Can someone brush up my 169 skills.
> What am I missing??
> Does anyone have a troubleshooting flow chart for the 169?? This would
> help.
>
> BTW when you push the on button you can see the front led give a slight
> single blink.
>
> TIA all !
> All tips and comments welcome.
> -----------------------------------------------------------------------------
> This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> Lost Password: http://www.tech-assist.org and select "Login Problems?".
> Email Archives: //www.freelists.org/archives/techassist/
>
-----------------------------------------------------------------------------
This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
Other related posts:
