Sony KV-32HS500 6 blinks despite MCZ300D(B) chip replacement

[Jstein]

Hello everyone,

I have a 32” Sony KV-32HS500 Trinitron flat screen CRT set. I
acquired this set from a friend of mine who stated that the set led
was blinking 6 times. Having prior knowledge of this (very common)
issue I decided to see if I could resolve the issue. I replaced both
MCZ3000D chips with the (updated) MCZ3000DB. These chips were
purchased from Prelco in NJ (now out of business). After replacing
these chips the set has worked flawlessly for the past 5 months.

This brings us to present.

Upon turning the set on last night, I could hear program audio but no
picture. The set clicked and appeared like it would turn on however it
shut down and I received 5 blinks. I attempted to turn on the set
approx 5 or 6 times over the next 24 hours. I experienced the same
symptoms. After about the 6th try, I now hear no audio, the set
immediately shuts down and the led alternates between 6 and 7 blinks.
I was able to find the service manual recently with schematics. Does
anyone have any suggestions or a likely place to start looking? Any
and all help would be greatly appreciated. Thank you in advance.

 

[Jstein]

On Apr 8, 9:02 pm, Jstein <stein.je...@gmail.com> wrote:

Hello everyone,

I have a 32” Sony KV-32HS500 Trinitron flat screen CRT set.  I
acquired this set from a friend of mine who stated that the set led
was blinking 6 times. Having prior knowledge of this (very common)
issue I decided to see if I could resolve the issue.  I replaced both
MCZ3000D chips with the (updated) MCZ3000DB. These chips were
purchased from Prelco in NJ (now out of business).   After replacing
these chips the set has worked flawlessly for the past 5 months.

This brings us to present.

Upon turning the set on last night, I could hear program audio but no
picture. The set clicked and appeared like it would turn on however it
shut down and I received 5 blinks.  I attempted to turn on the set
approx 5 or 6 times over the next 24 hours. I experienced the same
symptoms. After about the 6th try, I now hear no audio, the set
immediately shuts down and the led alternates between 6 and 7 blinks.
I was able to find the service manual recently with schematics. Does
anyone have any suggestions or a likely place to start looking?  Any
and all help would be greatly appreciated. Thank you in advance.

EDIT: Since posting this, the set blinks 6 times consistently.

 

[Franc Zabkar]

On Fri, 9 Apr 2010 05:22:28 -0700 (PDT), Jstein
<stein.jesse@gmail.com> put finger to keyboard and composed:

EDIT: Since posting this, the set blinks 6 times consistently.

Doesn't the service manual explain the blink codes?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[Mark Zacharias]

"Franc Zabkar" <fzabkar@iinternode.on.net> wrote in message
newsrg4s5lsihgqiqrt1vp76plqu2klrrq6h6@4ax.com...

On Fri, 9 Apr 2010 05:22:28 -0700 (PDT), Jstein
stein.jesse@gmail.com> put finger to keyboard and composed:

EDIT: Since posting this, the set blinks 6 times consistently.

Doesn't the service manual explain the blink codes?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

We need more info from the OP. Is the 200 volt line coming up? (it's not
derived from the HV).
Are either of the white Micron 0.1 ohm resistors open?

The entire board is probably still available; if not, Sony will rebuild
them.

The part number of the board is A-1300-319-A (D board, complete).

Dealer cost 169.99 and a list price of 195.00. There is a core charge of I
think 290.00 which the non-authorized servicer would need to pay up front,
then get credited back when the core is returned.


Mark Z.

 

[Fast]

"Franc Zabkar" <fzabkar@iinternode.on.net> ha scritto nel messaggio
newsrg4s5lsihgqiqrt1vp76plqu2klrrq6h6@4ax.com...

On Fri, 9 Apr 2010 05:22:28 -0700 (PDT), Jstein
stein.jesse@gmail.com> put finger to keyboard and composed:

EDIT: Since posting this, the set blinks 6 times consistently.

Doesn't the service manual explain the blink codes?

No horizontal ( H Stop), no raster, goes to blinking self diagnosis function
immediately.Check C515 & 516 and the jungle IC,IC206.