Philips 50pfp5332d/37 Y Sustain problem

[DakotaKid]

Philips 50pfp5332d /37 has a problem with Y Sustain. Chassis number is EJ3.0U PA, panel is PP50HW028A Power supply powers up and output voltages are close to voltages listed on panel with exceptions that I will note here. Power supply, small signal board and X/Y interconnect board all have green solid LED's and interconnect board also has one green flashing LED. I am not sure what the voltage tolerances are but I may adjust them using the pots on the boards once I get things figured out. No bulges, leaks or other visible damage to any capacitors on any of the boards.
Panel label-----Actual meas.
Va 63V 61V
Vsc -190V
Vs 205 200V
Ve 94V 104V
5V2 5.3V 4.99V
5V_SW 5.3V 4.99V
12V 12.4V 11.87V
SND_P 17V
SND_N -17V

Y sustain board shows immediate issues. Incoming glass fuse is blown, small green fuse (looks like a resistor) is not blown. Control chips on output board show extreme damage from heat or overcurrent or overvoltage. A couple appear to be nearly blown apart. I wish I knew chicken and egg here because I don't want to blow another set of Y boards by just replacing them and a fuse if there is another power issue on the board. Am looking for advice from the experts here on what I should replace on the main Y board. Replace the large green capacitors? Looks like most of the caps are the original Samwah brand.

Pictures posted show overview of the Y boards, closeups of burned controller IC's, blurry close up of Y board fuses, interconnect board with LED marked that is flashing.

[DakotaKid]

Re: Philips 50pfp5332d/37 Y Sustain problem

i will check the FETs on both X and Y sustain boards, not sure if I am up to attempting repairs on the buffer board though with the surface mount buffer IC's.