Philips 50PF7320A/37B green then flashing red power light.

There are several very important things you need to know about this kit, so please read this listing carefully:

Bear in mind that when either of those buffers fail it usually kills the YSUS board.
Coppell TV Repair offers you Y-Main repair (and eventually buffer replacement - not listed on eBay), but we avoid doing buffer repairs ourselves.
This kit contains the four ICs that are used to dispatch the sustain impulses sent by the YSUS to the individual display lines.
You are not getting the board on the picture, only the 4 ICs below it!
Replacing an IC like one of these is a fairly delicate procedure! Do it at your own risk!
We recommend using new buffers whenever possible and only relying on IC replacement when you have no other choice and you have the experience.
Although most commonly only one IC fails on the board , for reasons disscussed at our blog we strongly recommend that all 4 ICs get replaced at the same time.
For the same reason we strongly recommend that you replace or service both buffers at the same time.
Otherwise you'd end up having the same problem.
We have definitely done ourselves what we advertise here.
Alas, we can't describe the techniques we use at our own repair facility - first because we do not want to give know-how to potential competitors and second because it is a delicate task that usually takes investment of time and money before it starts producing return...meaning the first few attempts are usually unsuccessful.