the Toshiba sd-43htsu and at least one other Toshiba system have a high failure rate . the unit come on , display `` hello ... protection ... Goodbye '' and shut off . search of the web and a call to Toshiba both blame the problem on c27 . for those not electronically mind , that be a Capacitor number 27 . this particular capacitor be a 100uf -lrb- microfarad -rrb- with a voltage rating of 16v . I have replace c27 with a 100uf rate at 25v on the theory that excess voltage be the problem . so far so good . the unit work again ! to replace this capacitor -lrb- which cost less than a dollar at a electronics supply store -rrb- , first remove the top cover . c27 be label in small print on the main board -lrb- biggest and below all other board -rrb- near the center of the instrument . you will have to remove the bottom board entirely , which look complicated but be not really too bad . to get at the main board , and unsolder c27 , you have to remove the main board . do not worry about get the connector back where they come from . they be all key so that they go in only one way and the semi-permanent bend in the wire make it pretty obvious where all the connector go and which way . in the way be a vertical board which run from front to back . this vertical board be also attach permanently to a 3 '' x 5 '' board attach to the rear panel via the video input and output connector . both board come out together if you unfasten the 3 '' x 4 '' board from the rear panel . the vertical board make connection to the main board in two place with edge connector on the vertical board . note how they fit into the main board . remove every screw from the rear panel except those hold the fan and those hold the antenna connector to the rear panel . carefully pull out the two flat cable from the center vertical board and one between the AM\/FM tuner -lrb- small board in the left rear corner of instrument -rrb- to the 3 '' x 5 '' board . one connector with individual wire connect to the dvd assembly . it be solder to the main board , but the connector come out easily at the dvd assembly end . pull the side of the instrument apart very slightly to unsnap the rear panel from the instrument . one connector below the 3 '' x 5 '' board connect to the power supply board directly beneath the 3 '' x 5 '' board . my instrument have a toroid around that cable ... yours may not . pull out all the connector to the main board and remove the 6 screw hold it to the bottom of the chassis . remove the one screw toward the front of the instrument hold the vertical board in place . now you can tip the main board up and get to the back . note that the capacitor have a minus sign on it . you must replace the old capacitor in the same orientation . the minus sign point to the left of the instrument . unsolder c27 and replace with 100uf\/25v . be sure you have connect all the cable up again when you reassemble the unit . the whole job should take less than a hour and it sure beat the price of the repair or shipment to Toshiba . I be visit in Panama at the moment and Toshiba have no repair and no warranty here .