[TechAssist] Re: KV35S36 regs in thermal runaway
- From: "tony saracco" <tcselectronics@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 23 Sep 2003 18:48:14 -0500
I will change it tomorrow and retest. I hope it works because this week is
dog central and dont have a lot of free time to spend on it.
Tony Saracco
TCS ELECTRONICS
Elgin , IL 60120
847-695-1928
tcselectronics@xxxxxxxxxxxxxxxx
----- Original Message -----
From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, September 23, 2003 9:34 AM
Subject: [TechAssist] Re: KV35S36 regs in thermal runaway
> I have had at least one repeat transistor failure caused by a shorted
VDR601
> and it was the only bad part except for the two transistors. Yes it will
run
> with a bad VDR601 but only long enough for the customer to get it home and
> watch one or two programs.
> **************************************************
> Jim Myers
> Since 1972
> Telrad Electronic Services Co.
> Fort Wayne, IN 46815
> *************************************************
> ----- Original Message -----
> From: "tony saracco" <tcselectronics@xxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, September 23, 2003 7:41 AM
> Subject: [TechAssist] Re: KV35S36 regs in thermal runaway
>
>
> I may be wrong but will the supply operate with a shorted vdr601. this
> supply runs fine for almost an hour before Q601 an Q602 die from heat
> exhaustion. also the 10 ohm resistor off the vdr is not open. but this
unit
> did have 2 bad Mylar caps.1 bad tantalum cap, 2 off value 22 ohm resistors
> and one open 1.8 ohm 2 w resistor all on the primary side of the supply.
>
> Tony Saracco
> TCS ELECTRONICS
> Elgin , IL 60120
> 847-695-1928
> tcselectronics@xxxxxxxxxxxxxxxx
> ----- Original Message -----
> From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, September 22, 2003 12:38 PM
> Subject: [TechAssist] Re: KV35S36 regs in thermal runaway
>
>
> > VDR601? Some techs say always replace it so maybe you did but it's easy
to
> > check. Remove it and read it's ohms, should be infinity, anything less
and
> > it's bad.
> > **************************************************
> > Jim Myers
> > Since 1972
> > Telrad Electronic Services Co.
> > Fort Wayne, IN 46815
> > *************************************************
> > ----- Original Message -----
> > From: "tony saracco" <tcselectronics@xxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, September 22, 2003 11:11 AM
> > Subject: [TechAssist] KV35S36 regs in thermal runaway
> >
> >
> > I have changed the .47uf bird tird caps, .22uf blue caps, 2 - .001uf
blue
> > caps ( basically all caps in primary side of reg circuit) statically
check
> > all other reg components but Q 601 an 602 still over heat and die after
45
> > min. I even tried making heat sinks with no luck there. YES i am using
> > generic C4834's but can get away with it most of the time without
thermal
> > probs. Have tried both P's and M versions.
> > any advise or maybe a pws part # if it is still available, Not listed on
> > tritronix model part list.
> >
> > could use the SM if someone wants to Email it to me.
> >
> > thanks much
> >
> > Tony Saracco
> > TCS ELECTRONICS
> > Elgin , IL 60120
> > 847-695-1928
> > tcselectronics@xxxxxxxxxxxxxxxx
> >
>
****************************************************************************
> > *
> > 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/
> >
> >
>
>
>
****************************************************************************
> *
> 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/
>
>
*****************************************************************************
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:
