This model uses the 17PW16/2 Vestel PSU. The following info will also apply to the following PSU's
17PW15-8 17PW15-9 17PW20 17PW20.1 17P20v1 17PW20v2
17PW16-1 17PW16-2
This set--which I Think is a M42LW508 has no rear cover/back--hence not sure of its model number....
The fault was, Intermittent stuck in Stby, and intermittent going to standby. Sometimes you could bring it out of standby sometimes not, sometimes the stby light would come on, sometimes not.
Digging round on the web, it appears there's a mod kit for this, consisting of a number of caps and a Voltage Regulator/Transistor.
The caps reference-numbers are-
C877 and C878, 0.018uF 650V--well known on this forum allegedly.
The other four are smaller leccy-litics C892 and C801 on the Primary (Live) side of the 5V SMPS.
The other two are C901 and C817. These two are the smoothing and post regulator decoupling of the 5V line, on the 'safe' side of the PSU.
The IC 829 Or Transistor--depending on the PSU version--Q809 should also be replaced.
--The regulator is a 78L05 5V reg. Not sure of the transistor--as I didnt buy the kit, I made it up from stock, and my psu version used the IC rather than the transistor.
Ive just changed the caps in this set and not the regulator IC. (didnt have one in stock) It has performed faultlessly since. The 5V line is now clean and exactly 4.99V when on.
The removed caps look in perfect condition, no signs of issues. I'll check them when I get hold of ESR meter....
17PW15-8 17PW15-9 17PW20 17PW20.1 17P20v1 17PW20v2
17PW16-1 17PW16-2
This set--which I Think is a M42LW508 has no rear cover/back--hence not sure of its model number....
The fault was, Intermittent stuck in Stby, and intermittent going to standby. Sometimes you could bring it out of standby sometimes not, sometimes the stby light would come on, sometimes not.
Digging round on the web, it appears there's a mod kit for this, consisting of a number of caps and a Voltage Regulator/Transistor.
The caps reference-numbers are-
C877 and C878, 0.018uF 650V--well known on this forum allegedly.
The other four are smaller leccy-litics C892 and C801 on the Primary (Live) side of the 5V SMPS.
The other two are C901 and C817. These two are the smoothing and post regulator decoupling of the 5V line, on the 'safe' side of the PSU.
The IC 829 Or Transistor--depending on the PSU version--Q809 should also be replaced.
--The regulator is a 78L05 5V reg. Not sure of the transistor--as I didnt buy the kit, I made it up from stock, and my psu version used the IC rather than the transistor.
Ive just changed the caps in this set and not the regulator IC. (didnt have one in stock) It has performed faultlessly since. The 5V line is now clean and exactly 4.99V when on.
The removed caps look in perfect condition, no signs of issues. I'll check them when I get hold of ESR meter....
Comment