Hi,

A friend of mine at work has a Techwood PLR85 Home Theater Receiver.
He recently had a party, and had a couple speakers outside, connected
to the receiver (indoors). A sudden rain shower got the speakers (not
the receiver) wet outside, and since then, whenever he tries to power
on the receiver, after the "WELCOME" message scrolls by, a "PROTECT"
message appears on the display. There is a connector to what I
believe is the PA board, and when that connector is disconnected, the
unit powers up without the "PROTECT" message.

Anyone have any kind of information on this unit? I'm trying to help
this guy out, but I'm not familiar with this brand, and have no
schematics.

Tia,

Bill

The output stage is damaged. More than likely some output transistors,
drivers, and some support components are damaged.

Your friend should send the receiver to a service centre to have it checked.
Considering that it is not a big name brand, the service tech may have
difficulty to purchase the service manual and any proprietary parts if
required.

--

Jerry G.
======


"Darmok" wrote in message
...
Hi,

A friend of mine at work has a Techwood PLR85 Home Theater Receiver.
He recently had a party, and had a couple speakers outside, connected
to the receiver (indoors). A sudden rain shower got the speakers (not
the receiver) wet outside, and since then, whenever he tries to power
on the receiver, after the "WELCOME" message scrolls by, a "PROTECT"
message appears on the display. There is a connector to what I
believe is the PA board, and when that connector is disconnected, the
unit powers up without the "PROTECT" message.

Anyone have any kind of information on this unit? I'm trying to help
this guy out, but I'm not familiar with this brand, and have no
schematics.

Tia,

Bill

On Oct 25, 2:29 am, "Jerry G." wrote:
The output stage is damaged. More than likely some output transistors,
drivers, and some support components are damaged.

Your friend should send the receiver to a service centre to have it checked.
Considering that it is not a big name brand, the service tech may have
difficulty to purchase the service manual and any proprietary parts if
required.

--

Jerry G.
======

"Darmok" wrote in message

...
Hi,

A friend of mine at work has a Techwood PLR85 Home Theater Receiver.
He recently had a party, and had a couple speakers outside, connected
to the receiver (indoors). A sudden rain shower got the speakers (not
the receiver) wet outside, and since then, whenever he tries to power
on the receiver, after the "WELCOME" message scrolls by, a "PROTECT"
message appears on the display. There is a connector to what I
believe is the PA board, and when that connector is disconnected, the
unit powers up without the "PROTECT" message.

Anyone have any kind of information on this unit? I'm trying to help
this guy out, but I'm not familiar with this brand, and have no
schematics.

Tia,

Bill

Try hooking up another set of speakers to see if they work. If they
do then I suspect his other speaker(s) are still wet causing the
receiver to sense them as shorted and going into a protect mode of
some sort. Let those speakers dry out throughly (days maybe). Don't
know if they'd be worth a crap even if they do dry out but what the
heck.
Rush

On Thu, 25 Oct 2007 12:32:41 -0700, rush14
wrote:


"Darmok" wrote in message


A friend of mine at work has a Techwood PLR85 Home Theater Receiver.
He recently had a party, and had a couple speakers outside, connected
to the receiver (indoors). A sudden rain shower got the speakers (not
the receiver) wet outside, and since then, whenever he tries to power
on the receiver, after the "WELCOME" message scrolls by, a "PROTECT"
message appears on the display. There is a connector to what I
believe is the PA board, and when that connector is disconnected, the
unit powers up without the "PROTECT" message.

Anyone have any kind of information on this unit? I'm trying to help
this guy out, but I'm not familiar with this brand, and have no
schematics.

Tia,

Bill

Try hooking up another set of speakers to see if they work. If they
do then I suspect his other speaker(s) are still wet causing the
receiver to sense them as shorted and going into a protect mode of
some sort. Let those speakers dry out throughly (days maybe). Don't
know if they'd be worth a crap even if they do dry out but what the
heck.
Rush

Well, thee are NO speakers hooked up when he gets the "PROTECT"
message, so it can't be the speakers. I'm thinking that either one or
more of the 8 output devices 'went south', or else a 'sense circuit'
did. Of course, I have no schematics, so I don't know if there even
is a sense circuit, or where the fault/protection circuit is. Welton
Techwood have a Suite in Dallas, Texas, and a toll free number, but a
short menu that's limited to warranty and info requests. Don't know
if there is anyone "live" there who could steer me in the right
direction.