Wycombe secured their route into the third round of the FA Cup as a brace from Scott Rendell and a late effort from Stuart Beavon clinched a 3-1 victory over Blue Square South side Chelmsford City.
Rendell opened the scoring midway inside the first half when he guided home Gareth Ainsworth's speculative strike, and the Blues could have been 2-0 up when the referee controversially overturned his original decision to allow Beavon's effort just after the break following lengthy consultations with his assistant.
A free-kick from Sam Higgins brought the scores level just before the hour-mark but Rendell restored the lead with a clinical volley from close range 14 minutes later.
And Beavon completed the victory with a late solo effort, darting from midfield to place the ball past the keeper and put his side into the hat for the third round for the first time since 2002.
Gary Waddock reacted to the disappointing midweek showing against Torquay by making three changes to his starting line-up, calling Leon Johnson, Stuart Lewis and Scott Rendell into the side in place of Danny Foster, Lewis Montrose and Ben Strevens.
Buoyed by a large following support, the visitors made a bright start to the game but their high defensive line offered a couple of early openings for the Blues, with Scott Rendell seeing the first chance of the game saved by keeper James Pullen when he found a yard of space 18 yards out.
Seven minutes later, Stuart Beavon did well to cut in from the right channel and drive an effort across goal from 25 yards, missing the far post by a couple of yards, while City's first chance came instantaneously with Ricky Modeste missing the target from just outside the box.
And the opening goal came midway through the half when a training ground routine paid dividends for Gary Waddock's men. Matt Bloomfield flung his corner to the edge of the box where Gareth Ainsworth was waiting to volley the ball goalwards, and Scott Rendell found himself unmarked to divert the ball past the keeper six yards out.
Scott Rendell diverts Gareth Ainsworth's volley past the keeper
Rendell was in the thick of things again four minutes later when Stuart Beavon dug out a cross from the byline and picked out his strike partner at the near post, and although Rendell beat his man to stab it goalwards, James Pullen was alert to keep the ball out with a smart block.
Then, Andy Sandell's quickly taken through allowed Kevin Betsy to pick out Rendell on the penalty spot with an inch-perfect cross, but the striker leant back too much and sent his volley over the bar.
Wycombe seemed comfortably in controlled, and were a lot more assured in defence than during Tuesday's defeat, while Stuart Lewis was mopping up most loose balls in front of the back four. The rest of the half was fairly quiet but the opening to the second period was hugely controversial by comparison.
Within moments of the restart, Stuart Beavon had lashed home from close range after City failed to clear Kevin Betsy's cross. But after lengthy protests from the visiting players, the referee consulted his assistant and overturned his original decision, awarding a free-kick rather than the goal.
The decision to allow Stuart Beavon's goal was overturned by the referee just after the break
The controversy added spice to what had been a fairly one-sided cup tie and inspired the visiting fans to increase the volume as they looked to lift their side. And predictably, they were level just before the hour-mark when another refereeing decision gave City a free-kick 25 yards out, and Sam Higgins stroked the ball home through a poorly-built wall.
Wycombe remained the better side but the game was more open than before, and Chelmsford defended in numbers whilst retaining some potency on the counter-attack. A succession of corners tested their resolve and they almost went in front when Anthony Cook cut in from the left and bent an effort just past the far post.
But Rendell was determined to steal the FA Cup glory for himself and his showed his clinical streak in front of goal with an unstoppable effort from six yards to restore the Blues' lead. Kevin Betsy's cross from the left was deflected into the striker's path and he made no mistake in lashing home to end a decent spell of Wycombe pressure.
The striker almost had a second hat-trick of the month when he sent a low drive towards the bottom corner from distance, but the keeper was equal to it and palmed the ball around the post. Moments later, Rendell had another sight of goal but again was denied by a Chelmsford shirt.
On 82 minutes, it was Kevin Betsy who tested the reflexes of the keeper with a delicate effort towards the bottom corner, and the all-important third goal came two minutes later courtesy of Stuart Beavon.
The striker dropped deep and played a through-ball to Kevin Betsy, who was offside and left it for Beavon to continue his run, collecting the ball and poking home from just inside the area to secure the Blues' passage into round three.
11mins: SAVE - Scott Rendell fires straight at James Pullen from the edge of the box.
18mins: CHANCE - Stuart Beavon fizzes his shot wide.
19mins: CHANCE - Ricky Modeste puts one wide from 25 yards.
22mins: GOAL - Scott Rendell glances home a header to put the Blues one up.
25mins: YELLOW - Gareth Ainsworth is booked for a late tackle.
27mins: SAVE - James Pullen denies Scott Rendell at the near post.
30mins: CHANCE - Rendell volleys over the top.
47mins: CONTROVERSY - Stuart Beavon's goal is eventually disallowed after discussions between the referee and his assistant.
59mins: GOAL - Sam Higgins levels the scores with a low free-kick which beats the wall.
61mins: YELLOW - Dave Winfield goes in late and sees yellow, while Sami El-Abd follows him for his reaction.
67mins: SAVE - Gareth Ainsworth shoots straight at the keeper.
71mins: CHANCE - Anthony Cook shoots wide of the far post.
73mins: GOAL - Scott Rendell restores the lead, lashing home from close range.
75mins: SAVE - Rendell's long distance daisy-cutter is palmed around the post by Pullen.
77mins: SUBS - Matthew Lock and Sam Higgins come off for Billy Bricknell and Danny Green.
82mins: SAVE - Kevin Betsy's shot is turned behind for a corner.
84mins: GOAL - Stuart Beavon secures the win with a fine finish when through on goal.
90mins: SUBS - Ben Strevens comes on for Scott Rendell while City swap James Mulley for John Martin.
90+2mins: SUB - Lewis Montrose replaces Stuart Lewis.
90+4mins: SUB - Kadeem Harris replaces Gareth Ainsworth.