Sony 32" dead again.

[Dani]

KV-32S40 dead, replaced horiz output, MX regulator IC, & resistor. VDR
on separate power supply board measured open...should be ok, & I never
had that type VDR in stock, used the
variac, slowly up to 120 vac, after 30 secs...gently blew the parts
again. Replaced horiz drive
cap. Pix was perfect. Did I miss anything? Should I replace the VRD,
even though it measured open circuit? Thanks.

 

[Do Little2]

KV-32S40 dead, replaced horiz output, MX regulator IC, & resistor. VDR
on separate power supply board measured open...should be ok, & I never
had that type VDR in stock, used the variac, slowly up to 120 vac, after
30 secs...gently blew the parts again. Replaced horiz drive
cap. Pix was perfect. Did I miss anything?

A variac is of no help in this Sony circuit. As a test, next time, use
a 100 Watt light bulb in series with the 120 VAC. If the set is in
working condition than it will -try- to startup. If there is another
-major- problem the 100 Watt bulb just lights up bright and there
is no further damage done.

Good Luck

 

[Shoreline Electronics]

Cracked solder connections on T501 Horizontal Base drive tranny is typically
what causes the failure.

If you did NOT resolder it....this is what caused the domino effect failure!

Look at the pins with a magnifying loop...you will see!

Resolder this transformer on ANY TV you repair.


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
[email protected]
========================

 

[kip]

That's because you never fixed the problem
that caused those components to blow in the first place.