[TechAssist] Re: Sanyo AVM-2595U - bad regulation.
- From: "Patrick Fugere" <p_fugere@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 28 Nov 2001 19:16:49 -0500
Voltage plays aroud 105v coming out of the STR. Same thing going in( isn't
it suppose to be arround 150v?). B+ goes from 90v to 110v depending on the
brightness of the image. The brighter the lower the voltage is.
no irregular excess ripple noticed on scope. Mostly horizontal movement,
especially pin. The HOT is not abnormally hot. tested it for 20min on.
U suspect power supply components? HOT?
----- Original Message -----
From: "Jerry" <geiting@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, November 28, 2001 6:50 PM
Subject: [TechAssist] Re: Sanyo AVM-2595U - bad regulation.
>
> How low is the regulated voltage? Is the raw B+ to the regulator OK?
excess
> ripple? If not check filter caps and power supply diodes. Is the pix
> getting smaller vert and horz or just horz? Is HOT running hot? The d1879
> and d1880 cross to different transistors so they may not be similar enough
> to sub correctly.
>
> Jerry
> Christian's Electronics Service
>
> ----- Original Message -----
> From: "Patrick Fugere" <p_fugere@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, November 28, 2001 6:24 PM
> Subject: [TechAssist] Sanyo AVM-2595U - bad regulation.
>
>
> |
> | Hi,
> |
> | Sanyo AVM-2595U with bad regulation.
> | Received the set dead. HOT was short so I replaced it. Now it goes on
but
> | very bad regulation. The brighter the screen gets the smaller and more
> | distorted the image is.(squeezed pin).
> | I replaced IC001 ( STR30130 ) and still the same . So I replaced the
> nearby
> | cap C007 and no dice.
> |
> | What else could be causing this. The original HOT is D1879 but I
> replaced
> | it with one I had in stock which has similar specs D1880. Could this be
> it?
> | I would doubt it but...
> |
> | Any help appreciated.
> |
> | Patrick Fugere
> | F u j i s t i c s
> | Montreal, Canada.
> | p_fugere@xxxxxxxxxxxx
> |
> |
> |
> |
> |
> |
> |
> |
> |
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