A
A. Melo
Guest
Thanks to all the people that maintain the FAQs. Without it I wouldn't have
had the courage to get inside this beast. I am not a technician or had any
electronic formation at any stage.
I didn't post any question here, a search found lots of tips about this
monitor. Specially one by Justin Masters about the vertical chip TDA 1675A
(he did an inversion and posted TDA1765 iso 1675 which delayed thing a
bit...). Other posts referred to the caps around that IC.
Before I went on holidays this monitor had the occasional image shake
(vertical) but besides that it was working fine. One month later I came
back, it would power up, image appeared, immediately it would start
compressing vertically, collapse to a horizontal line and turn off, all of
this in a few seconds, leaving the power led on as the only sign of life. If
I switched off and on again, image would not appear at all, only static
noise powering up and shuting down. I had to wait a few hours before
switching it on again if I wanted to see the image collapsing .
Went to the FAQ, did some searches and CHARGED THE BATTERY for the powered
SCREW DRIVER... .
If I hadn't taken plenty of pictures with the digital camera, I would never
had manage to put this monster back together...without setting the building
on fire...! All of this because of this monitors image quality.
I found several leaking caps on different areas and replace those: C411,
C5A4, C2101 and C5E7. Replaced TDA 1675A and some other caps around it:
C405, C407, C408, C410, C411, C412 (ceramic).
After a few fights with my wife for having to leave this thing in bits for
some days and 20 euros worth of parts (including new tips for the powered
screwdriver...): Magically it came back with all its good image quality
untouched as I managed to resist the temptation of fiddling with every one
of those VRs present everywere
.
Lets see how long it lasts because I was not able to get 105° C caps, the
shops only had 85°C replacements. Hopefully I will be able to get one of
those 19 inch TFT and retire the 5FG soon enough.
rgds
Alberto Melo
had the courage to get inside this beast. I am not a technician or had any
electronic formation at any stage.
I didn't post any question here, a search found lots of tips about this
monitor. Specially one by Justin Masters about the vertical chip TDA 1675A
(he did an inversion and posted TDA1765 iso 1675 which delayed thing a
bit...). Other posts referred to the caps around that IC.
Before I went on holidays this monitor had the occasional image shake
(vertical) but besides that it was working fine. One month later I came
back, it would power up, image appeared, immediately it would start
compressing vertically, collapse to a horizontal line and turn off, all of
this in a few seconds, leaving the power led on as the only sign of life. If
I switched off and on again, image would not appear at all, only static
noise powering up and shuting down. I had to wait a few hours before
switching it on again if I wanted to see the image collapsing .
Went to the FAQ, did some searches and CHARGED THE BATTERY for the powered
SCREW DRIVER... .
If I hadn't taken plenty of pictures with the digital camera, I would never
had manage to put this monster back together...without setting the building
on fire...! All of this because of this monitors image quality.
I found several leaking caps on different areas and replace those: C411,
C5A4, C2101 and C5E7. Replaced TDA 1675A and some other caps around it:
C405, C407, C408, C410, C411, C412 (ceramic).
After a few fights with my wife for having to leave this thing in bits for
some days and 20 euros worth of parts (including new tips for the powered
screwdriver...): Magically it came back with all its good image quality
untouched as I managed to resist the temptation of fiddling with every one
of those VRs present everywere
.Lets see how long it lasts because I was not able to get 105° C caps, the
shops only had 85°C replacements. Hopefully I will be able to get one of
those 19 inch TFT and retire the 5FG soon enough.
rgds
Alberto Melo